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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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                                    FORM 8-K

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                                 CURRENT REPORT

                         PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

        DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED):April 21, 2011

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                        RESEARCH FRONTIERS INCORPORATED
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

          DELAWARE                      1-9399               11-2103466
(STATE OR OTHER JURISDICTION    (COMMISSION FILE NUMBER)   (IRS EMPLOYER
     OF INCORPORATION)                                      IDENTIFICATION NO.)

                            240 CROSSWAYS PARK DRIVE
                          WOODBURY, NEW YORK 11797-2033
              (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES AND ZIP CODE)

       REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (516) 364-1902

Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of
the following provisions (see General Instruction A.2. below):

[ ] Written communications pursuant to Rule 425 under the Securities Act
 (17 CFR 230.425)

[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act
(17 CFR 240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the
Exchange Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the
Exchange Act (17 CFR 240.13e-4(c))

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Item 7.01 Regulation FD Disclosure

On April 21, 2011, it was announced that Research Frontiers Inc.'s
SPD-SmartGlass technology will be on display at the New York Auto
Show through May 1, 2011 as part of the new Magic Sky Control
SPD-SmartGlass roof on the Mercedes-Benz SLK Roadster. Details
are noted in the press release reproduced below.

In the press release, it was also noted that for the SLK Roadster,
Daimler AG was working in conjunction with Research Frontiers,
and glass companies Nippon Sheet Glass and Pilkington, and using
SPD-Smart light control film currently being produced by Hitachi
Chemical Company in their dedicated factory line in Japan. While
Hitachi Chemical and Nippon Sheet Glass/Pilkington have some of
their SPD-related production lines in Japan, these companies
have reported to Research Frontiers that their SPD-related
production facilities have not been damaged by last month's
earthquake and related events in Japan, and as a consequence,
Research Frontiers does not expect that these events will have
any material adverse effect on the timing or amount of revenues
from sales of the Magic Sky Control roof on the SLK or other
vehicles, or from other SPD-Smart products.


  EXPERIENCE THE MAGIC AT THE NEW YORK AUTO SHOW
          WITH SPD-SMARTGLASS TECHNOLOGY


New York, NY. April 21, 2011 - Starting tomorrow and continuing
through May 1, 2011, thousands of visitors to the New York
International Auto Show will be able to experience for themselves
the most advanced and energy-efficient glass on the planet.

Daimler AG, working in conjunction with Research Frontiers
(Nasdaq: REFR), the inventor of SPD-SmartGlass technology,
Hitachi Chemical Co. and glass companies Nippon Sheet Glass
and Pilkington, has introduced a world's first: the
Mercedes-Benz SLK Roadster with Magic Sky Control technology.

The Mercedes-Benz Magic Sky Control roof is made possible by
Research Frontiers' patented SPD-Smart technology and allows
you to simply press a button and instantly change the tint
of the roof from very dark to clear.

Joseph M. Harary, President and CEO of Research Frontiers,
noted during press day at the New York Auto Show today:
"This feature on the new Mercedes-Benz SLK Roadster saves energy
by reducing heat inside the vehicle, which reduces air conditioning
requirements and CO2 emissions, and can also save fuel. The Magic
Sky Control option also brings more daylighting into the vehicle
when you want it, and enhances the driving experience by allowing
owners of the SLK to enjoy the pleasure of driving a convertible
all year round."

Look for the red SLK roadster at the Mercedes-Benz exhibition at
the New York Auto Show to see the Magic Sky Control panoramic
glass roof which Motor Trend Magazine has referred to as the
"killer app" and "the coolest part of the SLK without question"
and "amazing stuff."

In February 2011, it was announced that Daimler AG has selected
SPD-Smart light-control technology for its Magic Sky Control
panoramic glass roof now offered on the new Mercedes-Benz SLK
Roadster. Test results from Mercedes-Benz show this roof reduces
sun exposure in the vehicle to 1/20th of direct exposure levels.
Further, when compared to conventional automotive glass,
Mercedes-Benz also reports that the use of SPD-SmartGlass
significantly reduces the temperature inside the vehicle by
up to 18 degrees F. In addition, the ability to block over
99.9% of harmful UV light protects interiors, increasing the
useful life of fabrics and other materials.

Made with patented light-control SPD film developed by Research
Frontiers and currently being produced by Hitachi Chemical Company
in their dedicated factory line in Japan, SPD-SmartGlass is the
world's fastest-switching variably tintable dynamic glazing
technology. It is the only dimmable window technology that gives
users the ability to instantly and precisely control the level
of shading to any point between very dark and clear. This
provides exceptional control over solar energy while also
adding to user comfort and protecting interiors. Available
in both glass and lightweight polycarbonate substrates,
SPD-Smart products - windows, skylights, doors, partitions,
sunroofs and more - are laminated glazings that offer a
distinctive combination of sustainability and security, can
be controlled manually or automatically, and are available
in custom sizes and fabrications for new construction,
replacement and retrofit projects.


About Research Frontiers Inc.

Research Frontiers Inc. (Nasdaq: REFR) is the developer of SPD-Smart
light-control technology which allows users to instantly, precisely
and uniformly control the shading of glass or plastic, either manually
or automatically. Having invested over $80 million to date to develop its
technology, Research Frontiers currently holds approximately 500 patents
and patent applications and has built an infrastructure of 39 licensed
companies that collectively are capable of serving the growing global
demand for smart glass products in automobiles, homes, buildings,
aircraft and boats. Further information about SPD-Smart technology,
Research Frontiers and its licensees can be found at www.SmartGlass.com.

Note: From time to time Research Frontiers may issue forward-looking
statements which involve risks and uncertainties. This press release
contains forward-looking statements. Actual results could differ and
are not guaranteed. Any forward-looking statements should be
considered accordingly. "SPD-Smart" and "SPD-SmartGlass" are
trademarks of Research Frontiers Inc. "MAGIC SKY CONTROL" and
"Mercedes-Benz" are trademarks of Daimler AG.

For further information or to schedule a visit to the
Research Frontiers Design Center, please contact:

Joseph M. Harary, President and CEO
Research Frontiers Inc.
+1-516-364-1902
info@SmartGlass.com

[Photographs of the Mercedes-Benz SLK being tested in Death Valley,
California and of the SLK with the Magic Sky Control SPD-SmartGlass
Roof are included in the press release and have been supplied
courtesy of Daimler AG.]




The Press Release is reproduced above and is also available
on the Company's web site at www.SmartGlass.com and at
various other places on the internet.


This report and the press release referred to herein may include
statements that may constitute "forward-looking" statements as referenced
in the Private Securities Litigation Reform Act of 1995. Those statements
usually contain words such as "believe", "estimate", "project", "intend",
"expect", or similar expressions. Any forward-looking statements are
made by the Company in good faith, pursuant to the safe-harbor
provisions of the Act. These forward-looking statements reflect
management's current views and projections regarding economic
conditions, industry environments and Company performance. Factors,
which could significantly change results, include but are not
limited to: sales performance, expense levels, competitive activity,
interest rates, changes in the Company's financial condition and
several business factors. Additional information regarding these
and other factors may be included in the Company's quarterly 10-Q
and 10K filings and other public documents, copies of which are
available from the Company on request. By making these
forward-looking statements, the Company undertakes no obligation
to update these statements for revisions or changes after the
date of this report.


The information in this Form 8-K or the press release reproduced
herein shall not be  deemed "filed" for purposes of Section 18 of
the Securities Exchange Act of  1934, nor shall they be deemed
incorporated by reference in any filing under the  Securities
Act of 1933, except as shall be expressly
set forth by specific reference in such filing.


                                   SIGNATURES

      Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                          RESEARCH FRONTIERS INCORPORATED



                                          /s/ Joseph M. Harary
                                          ---------------------------
                                          By: Joseph M. Harary
                                          Title: President

Dated: April 22, 2011