LexDanaLexDanabeta
Inventor

Robert Knott

Inventor
Stratford, CA

Overview

4→
Patents
1977–2018
Patent span
Human necessities
Primary field (CPC A)

Patents· 4 as inventor

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

A47Bprimary
A47BTables22%
A47CChairs22%
F16MFrames, casings or beds of engines, machines or apparatus, not specific to engines, machines or apparatus provided for elsewhere22%
B01DSeparation11%
C07CAcyclic or carbocyclic compounds11%
C10GCracking hydrocarbon oils11%
PatentTitleYear
9,995,426Furniture swivel and furniture including the same20189,574,704'Furniture swivel and furniture including the same'20174,861,447'Process for reducing corrosive impurities in sulfolane used for extracting aromatic hydrocarbons'19894,038,156'Butadiene recovery process'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1989Patents assigned to SHELL OIL CO (2)· patent assignee history
1977–1989Based in Houston, TX, US· patent location history
2017–2018Patents assigned to C R PLASTIC PRODUCTS INC (2)· patent assignee history
2017Patents assigned to Elzinga Lenze (1)· patent assignee history
2017Patents assigned to GIRVIN BRADLEY (1)· patent assignee history
2017Patents assigned to KNOTT ROBERT (1)· patent assignee history
2017–2018Based in Stratford, CA· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
C R PLASTIC PRODUCTS INC22017–2018
SHELL OIL CO21977–1989
Elzinga Lenze12017
GIRVIN BRADLEY12017
KNOTT ROBERTself12017
Locations
LocationPatentsSpan
Stratford, CA22017–2018
Houston, Texas, US21977–1989