Inventor

James B. Stephens

Inventor

La Crescenta, CA, US

Overview

28→

Patents

1976–2004

Patent span

Physics

Primary field (CPC G)

Patents· 28 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F24Sprimary

F24SSolar heat collectors10%

G02BOptical elements, systems or apparatus10%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution10%

A61FFilters implantable into blood vessels8%

Y10TTechnical subjects covered by former us classification8%

F16KValves6%

G01NInvestigating or analysing materials by determining their chemical or physical properties6%

A01GHorticulture4%

G01FMeasuring volume, volume flow, mass flow or liquid level4%

G02CSpectacles4%

PatentTitleYear

RE038402'Optical lenses with selective transmissivity functions'2004 4,952,046'Optical lenses with selective transmissivity functions'1990 4,858,063'Spiral configuration of electrodes and dielectric material for sensing an environmental property'1989 4,596,269'Differential pressure-actuated valve with clean bias chamber'1986 4,586,692'Flushometer valve integrable with a structure'1986 4,523,808'Welding helmets with auxiliary optical vision systems'1985 4,514,278'Trace water sensor'1985 4,494,562'Float valve system flow proportioning device'1985 4,480,894'Curtain for shrouding welding operations'1984 4,408,834'Curtain for shrouding welding operations'1983 4,400,191'Sphere forming method and apparatus'1983 4,330,177'Curtain for shrouding welding operations'1982 4,242,201'By-pass water softener system and installation'1980 4,234,098'Fuel tank fill port extension'1980 4,226,475'Underground mineral extraction'1980 4,218,892'Low cost cryostat'1980 4,164,701'Portable device for testing electrical wiring circuits and power tools and equipment'1979 4,149,817'Primary reflector for solar energy collection systems and method of making same'1979 4,149,521'Solar energy collection system'1979 4,131,336'Primary reflector for solar energy collection systems'1978 4,091,800'Solar pond'1978 4,065,053'Low cost solar energy collection system'1977 3,995,333'Drain stopper'1976 3,983,714'Cryostat system for temperatures on the order of 2.degree.K or less'1976 3,960,297'Liquid measuring devices'1976 3,956,932'Wind sensor'1976 3,948,289'Flow regulators'1976 3,938,367'Sampler of gas borne particles'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1985Patents assigned to NASA (11)· patent assignee history

1976–1990Patents assigned to STEPHENS JAMES B (11)· patent assignee history

1976–1990Patents assigned to MILLER CHARLES G (9)· patent assignee history

1976–1989Based in La Crescenta, CA, US· patent location history

1979Based in Greenville, SC, US· patent location history

1982–1985Patents assigned to WILSON SALES CO INC (3)· patent assignee history

1985–1986Patents assigned to COAST FOUNDRY & MANUFACTURING (2)· patent assignee history

1985Based in LaCrescenta, CA, US· patent location history

1990–2004Based in Glendale, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NASA	11	1976–1985
STEPHENS JAMES Bself	11	1976–1990
MILLER CHARLES G	9	1976–1990
WILSON SALES CO INC	3	1982–1985
COAST FOUNDRY & MANUFACTURING	2	1985–1986

Locations

Location	Patents	Span
La Crescenta, California, US	24	1976–1989
Glendale, California, US	2	1990–2004
LaCrescenta, California, US	1	1985
Greenville, SC, US	1	1979