David N. Pulsifer — 5 Patents at Lightpath Technologies

David N. Pulsifer has been granted 5 US patents while listed as an inventor at Lightpath Technologies. The first was granted in 1985 and the most recent in September 1997. David N. Pulsifer ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list David N. Pulsifer in Brunswick, ME, US.

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Showing 1–5 of 5 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
5673353	Fiber and lens preform with deep radial gradient layer and method of manufacturing same	Robert Ward	1997-09-30
5522003	Glass preform with deep radial gradient layer and method of manufacturing same	Robert Ward	1996-05-28
5200858	Uni-directional gradient index of refraction glasses	James J. Hagerty, Guy E. Rindone	1993-04-06
4929065	Glass plate fusion for macro-gradient refractive index materials	James J. Hagerty	1990-05-29
4516281	Sewage treatment device	David B. MacPherson, Jay E. Paris, Robert W. Foley, Martin W. Greinier	1985-05-14	$67,000

David N. Pulsifer — 5 Patents

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