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Inventor

Alfred A. Hoffman, Jr.

Inventor
Bartlesville, OK, US

Overview

3→
Patents
1978–1979
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.

C07Cprimary
C07CAcyclic or carbocyclic compounds38%
B01DSeparation25%
C10KPurifying or modifying the chemical composition of combustible gases containing carbon monoxide25%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
PatentTitleYear
4,177,250'Method of removing acetylene and sulfur compounds from gases by absorption in dimethyl formamide'19794,160,000'Extraction of hydroperoxides'19794,086,288'Acetylenes removal from olefin streams for alkylation by dimethyl formamide absorption'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1979Patents assigned to PHILLIPS PETROLEUM CO (3)· patent assignee history
1978–1979Based in Bartlesville, OK, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
PHILLIPS PETROLEUM CO31978–1979
Locations
LocationPatentsSpan
Bartlesville, OK, US31978–1979