Kreitzer; Melvyn H
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kreitzer; Melvyn H.The latest application filed is for "zoom lens optical system".
- Kreitzer; Melvyn H - Cincinnati OH US
- Kreitzer; Melvyn H. - Cincinnati OH
| Patent | Date |
|---|---|
| Zoom lens optical system Grant 9,479,686 - Kreitzer , et al. October 25, 2 | 2016-10-25 |
| Zoom Lens Optical System App 20150234149 - Kreitzer; Melvyn H. ; et al. | 2015-08-20 |
| LED light for examinations and procedures Grant 8,872,435 - Kreitzer , et al. October 28, 2 | 2014-10-28 |
| LED Light For Examinations And Procedures App 20130069549 - Kreitzer; Melvyn H. ; et al. | 2013-03-21 |
| Projection lenses having color-correcting rear lens units Grant 7,230,770 - Kreitzer , et al. June 12, 2 | 2007-06-12 |
| Foldable projection lenses Grant 7,145,729 - Kreitzer , et al. December 5, 2 | 2006-12-05 |
| Projection lenses having color-correcting rear lens units App 20060028741 - Kreitzer; Melvyn H. ; et al. | 2006-02-09 |
| Projection lenses having color-correcting rear lens units App 20060028739 - Kreitzer; Melvyn H. ; et al. | 2006-02-09 |
| Foldable projection lenses App 20060028738 - Kreitzer; Melvyn H. ; et al. | 2006-02-09 |
| Folded, telecentric projection lenses for use with pixelized panels Grant 6,853,493 - Kreitzer February 8, 2 | 2005-02-08 |
| Folded, Telecentric Projection Lenses For Use With Pixelized Panels App 20040130799 - Kreitzer, Melvyn H. | 2004-07-08 |
| Projection lenses for use with reflective pixelized panels Grant 6,476,974 - Kreitzer November 5, 2 | 2002-11-05 |
| High speed retrofocus projection television lens systems Grant 6,301,056 - Kreitzer October 9, 2 | 2001-10-09 |
| Long focal length projection lenses Grant 6,301,057 - Kreitzer October 9, 2 | 2001-10-09 |
| Projection lenses having reduced lateral color for use with pixelized panels Grant 6,195,209 - Kreitzer , et al. Feb | 2001-02-27 |
| Focus corrector for zoom projection lenses used with pixelized panels Grant 6,169,636 - Kreitzer January 2, 2 | 2001-01-02 |
| Focusable, color corrected, high performance projection lens systems Grant 6,141,154 - Kreitzer October 31, 2 | 2000-10-31 |
| Lenses for electronic imaging systems Grant 6,097,551 - Kreitzer August 1, 2 | 2000-08-01 |
| Long focal length projection lenses for use with large pixelized panels Grant 5,991,089 - Kreitzer November 23, 1 | 1999-11-23 |
| Focusable front projection lens systems for use with large screen formats Grant 5,936,776 - Kreitzer August 10, 1 | 1999-08-10 |
| Zoom projection lenses for use with pixelized panels Grant 5,900,987 - Kreitzer | 1999-05-04 |
| Mini-zoom projection lenses for use with pixelized panels Grant 5,900,989 - Kreitzer May 4, 1 | 1999-05-04 |
| Projection lenses having larger back focal length to focal length ratios Grant 5,870,228 - Kreitzer , et al. February 9, 1 | 1999-02-09 |
| Variable power lens systems for producing small images Grant 5,745,301 - Betensky , et al. April 28, 1 | 1998-04-28 |
| Zoom lens having weak front lens group Grant 5,493,448 - Betensky , et al. February 20, 1 | 1996-02-20 |
| High performance, thermally-stabilized projection television lens systems Grant 5,455,713 - Kreitzer October 3, 1 | 1995-10-03 |
| Zoom lens having weak front lens group Grant 5,315,440 - Betensky , et al. May 24, 1 | 1994-05-24 |
| Zoom lens with short back focal length Grant 4,936,661 - Betensky , et al. June 26, 1 | 1990-06-26 |
| Color corrected projection lens Grant 4,900,139 - Kreitzer February 13, 1 | 1990-02-13 |
| Zoom lens Grant 4,838,668 - Betensky , et al. June 13, 1 | 1989-06-13 |
| Wide-angle zoom lens Grant 4,828,372 - Betensky , et al. May 9, 1 | 1989-05-09 |
| Compact wide-angle close-focus SLR zoom lens Grant 4,818,082 - Kreitzer April 4, 1 | 1989-04-04 |
| Objective lens system, relay lens system, and eyepiece lens system for night-vision goggles Grant 4,655,562 - Kreitzer , et al. April 7, 1 | 1987-04-07 |
| Catadioptric lens Grant 4,523,816 - Kreitzer June 18, 1 | 1985-06-18 |
| Internal focusing telephoto lens Grant 4,359,272 - Kreitzer November 16, 1 | 1982-11-16 |
| Zoom lens Grant 4,256,381 - Kreitzer March 17, 1 | 1981-03-17 |
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