Wortman, Donald E.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Wortman, Donald E..The latest application filed is for "semiconductor light emitting devices including embedded curent injection layers".

Company Profile

0.15.1

Wortman, Donald E. - Rockville MD

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Semiconductor light emitting devices including embedded curent injection layers App 20040223528 - Wortman, Donald E. ; et al.	2004-11-11
Valve-less fluid control circuit for rhythmic action devices Grant 6,319,214 - Wortman , et al. November 20, 2	2001-11-20
Acoustic navigation aid for autonomous coal miner Grant 6,094,986 - Wortman , et al. August 1, 2	2000-08-01
Method for chemical reaction control using a surface acoustic wave device Grant H675 - Wortman , et al. September 5, 1	1989-09-05
Wideband electronic frequency tuning for orotrons Grant 4,829,527 - Wortman , et al. May 9, 1	1989-05-09
Method and apparatus for transmitting a laser signal through fog Grant 4,670,637 - Morrison , et al. June 2, 1	1987-06-02
Method and apparatus for modulating a diffraction radiation generator Grant 4,590,596 - Wortman , et al. May 20, 1	1986-05-20
High performance orotron utilizing a dense electron beam Grant 4,571,726 - Wortman , et al. February 18, 1	1986-02-18
Depressed collector/ribbon electron beam analyzer for a diffraction radiation generator Grant 4,545,056 - Wortman , et al. October 1, 1	1985-10-01
Near millimeter wave generator with dielectric cavity Grant 4,286,230 - Morrison , et al. August 25, 1	1981-08-25
Method and apparatus for determining aerosol size distributions Grant 4,211,487 - Morrison , et al. July 8, 1	1980-07-08
Rare earth semiconductor laser Grant 4,193,044 - Morrison , et al. March 11, 1	1980-03-11
Mine detector system Grant 4,004,212 - Wortman January 18, 1	1977-01-18
Artificial Heart Utilizing Blood Pulsing Fluid Oscillators Grant 3,771,174 - Wortman November 13, 1	1973-11-13
Device For Draining Ventricular Fluid In Cases Of Hydrocephalus Grant 3,690,323 - Wortman , et al. September 12, 1	1972-09-12
Dynamic Action Valveless Artificial Heart Utilizing Dual Fluid Oscillator Grant 3,599,244 - Wortman August 17, 1	1971-08-17

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