LexDanaLexDanabeta
Inventor

Richard G. Gandy

Inventor
Grand Prairie, TX, US

Overview

5→
Patents
1977–1986
Patent span
Chemistry
Primary field (CPC C)

Patents· 5 as inventor

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

C04Bprimary
C04BLime, magnesia45%
C09KMaterials for miscellaneous applications, not provided for elsewhere45%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
PatentTitleYear
4,632,186'Well cementing method using an AM/AMPS fluid loss additive blend'19864,482,379'Cold set cement composition and method'19844,381,034'Zero free water cement composition and method'19834,332,619'Expansive admixture'19824,050,948'Method of making lightweight cement slurries and their uses'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1983Patents assigned to BJ HUGHES INC (3)· patent assignee history
1977–1984Based in Grand Prairie, TX, US· patent location history
1984–1986Patents assigned to HUGHES TOOL CO (2)· patent assignee history
1986Based in Spring, TX, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BJ HUGHES INC31977–1983
HUGHES TOOL CO21984–1986
Locations
LocationPatentsSpan
Grand Prairie, Texas, US41977–1984
Spring, Texas, US11986