Inventor

James G. Baker

Inventor

Bedford, NH, US

Overview

12→

Patents

1978–1994

Patent span

Physics

Primary field (CPC G)

Patents· 12 as inventor

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

G02Bprimary

G02BOptical elements, systems or apparatus50%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them11%

C21DModifying the physical structure of ferrous metals6%

F24SSolar heat collectors6%

F27DDetails or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace6%

G05DSystems for controlling or regulating non-electric variables6%

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation6%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution6%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%

PatentTitleYear

5,327,291'Compact objective lens'1994 5,052,661'Controlling heat treating furnaces'1991 4,925,281'Zoom lens'1990 4,812,864'Camera and two-element viewfinder'1989 4,650,292'Analytic function optical component'1987 4,496,223'Compact afocal attachment for use with photographic objectives'1985 4,457,592'Optical system utilizing a transversely movable plate for focusing'1984 4,456,783'Multielement optical panel'1984 4,331,391'Lens system having wide angle objectives'1982 4,270,837'Periscopic viewfinder system for use in photographic cameras'1981 4,171,872'Compact four element afocal lens'1979 4,119,980'Prism camera'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1994Patents assigned to POLAROID CORP (10)· patent assignee history

1978–1979Based in Winchester, MA, US· patent location history

1981–1994Based in Bedford, NH, US· patent location history

1982Patents assigned to US AIR FORCE (1)· patent assignee history

1991Patents assigned to ALUMINUM CO OF AMERICA (1)· patent assignee history

1991Based in Owensville, KY, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
POLAROID CORP	10	1978–1994
ALUMINUM CO OF AMERICA	1	1991
US AIR FORCE	1	1982

Locations

Location	Patents	Span
Bedford, NH, US	9	1981–1994
Winchester, Massachusetts, US	2	1978–1979
Owensville, KY, US	1	1991