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Inventor

John J. Bennison

Inventor
Runcorn, GB

Overview

4→
Patents
1985–1992
Patent span
Chemistry
Primary field (CPC C)

Patents· 4 as inventor

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

C02Fprimary
C02FTreatment of water, waste water, sewage, or sludge40%
C23FNon-mechanical removal of metallic material from surface20%
D21HPulp compositions20%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
PatentTitleYear
5,122,278'Inhibition of deposition in aqueous systems'19924,964,952'Method of controlling pitch using a cationically modified tannin'19904,566,972'Treatment of aqueous systems'19864,557,896'Treatment of aqueous systems'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–1986Patents assigned to DEARBORN CHEMICALS LTD (2)· patent assignee history
1985–1992Based in Runcorn, GB· patent location history
1990–1992Patents assigned to GRACE W R & CO (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DEARBORN CHEMICALS LTD21985–1986
GRACE W R & CO21990–1992
Locations
LocationPatentsSpan
Runcorn, GB41985–1992