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Inventor

David B. Acker

Inventor
The Woodlands, TX, US

Overview

4→
Patents
1998–2001
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.

C09Kprimary
C09KMaterials for miscellaneous applications, not provided for elsewhere60%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds20%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
PatentTitleYear
6,187,720'Delayed release breakers in gelled hydrocarbons'20016,169,134'Viscosifying hydrocarbon liquids'20015,906,966'Drilling mud additives and in adding viscosification additives to oil-based drilling muds'19995,723,550'Bulk sulfonation of EPDM rubber'1998

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1998–2001Patents assigned to NALCO EXXON ENERGY CHEM LP (2)· patent assignee history
1998–2001Based in The Woodlands, TX, US· patent location history
1999Patents assigned to EXXON RESEARCH ENGINEERING CO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NALCO EXXON ENERGY CHEM LP21998–2001
EXXON RESEARCH ENGINEERING CO11999
Locations
LocationPatentsSpan
The Woodlands, Texas, US41998–2001