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Inventor

Lewis B. Palmer

Inventor
Denver, CO, US

Overview

3→
Patents
1978–1982
Patent span
Chemistry
Primary field (CPC C)

Patents· 3 as inventor

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

C01Bprimary
C01BNon-metallic elements40%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry20%
C11DDetergent compositions20%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
PatentTitleYear
4,329,247'Stain remover for vinyl materials'19824,213,937'Silicon refinery'19804,092,446'Process of refining impure silicon to produce purified electronic grade silicon'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1980Patents assigned to TEXAS INSTRUMENTS INC (2)· patent assignee history
1978–1980Based in Denver, CO, US· patent location history
1982Patents assigned to PDI INC (1)· patent assignee history
1982Based in St. Paul, MN, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TEXAS INSTRUMENTS INC21978–1980
PDI INC11982
Locations
LocationPatentsSpan
Denver, CO, US21978–1980
St. Paul, Minnesota, US11982