Inventor
John A. Haslegrave
Inventor
Abingdon, GB
Overview
Patents· 6 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 elsewhere27%
C23FNon-mechanical removal of metallic material from surface27%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests27%
E21BEarth or rock drilling13%
Y10TTechnical subjects covered by former us classification7%
PatentTitleYear
5,427,999'Amine adducts as corrosion inhibitors'19955,322,630'Amine derivatives as corrosion inhibitors'19944,738,897'Polymer article and its use for controlled introduction of reagent into a fluid'19884,673,436'N, S containing corrosion inhibitors'19874,670,166'Polymer article and its use for controlled introduction of reagent into a fluid'19874,515,708'Corrosion inhibitors'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985Patents assigned to EXXON RESEARCH ENGINEERING CO (1)· patent assignee history
1985–1988Based in Houston, TX, US· patent location history
1987–1995Patents assigned to EXXON CHEMICAL PATENTS INC (5)· patent assignee history
1987–1995Based in Abingdon, GB· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| EXXON CHEMICAL PATENTS INC | 5 | 1987–1995 |
| EXXON RESEARCH ENGINEERING CO | 1 | 1985 |
Locations
| Location | Patents | Span |
|---|---|---|
| Abingdon, GB | 3 | 1987–1995 |
| Houston, Texas, US | 3 | 1985–1988 |