Inventor
William S. Halliday
Inventor
Cypress, TX, US
Overview
Patents· 13 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 elsewhere55%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests27%
E21BEarth or rock drilling9%
F17DPipe-line systems5%
Y10TTechnical subjects covered by former us classification5%
PatentTitleYear
7,977,281'Methods for minimizing the amount of graphite particles used during drilling operations'20117,393,813'Water-based drilling fluids using latex additives'20087,271,131'Fluid loss control and sealing agent for drilling depleted sand formations'20077,087,555'Drilling fluids comprising sized graphite particles'20066,790,812'Acid soluble, high fluid loss pill for lost circulation'20046,635,604'Low molecular weight water soluble organic compounds as crystallization point suppressants in brines'20036,165,945'Blends of glycol derivatives as gas hydrate inhibitors in water base drilling, drill-in, and completion fluids'20006,080,704'Glycols as gas hydrate inhibitors in drilling, drill-in, and completion fluids'20005,851,958'Olefins and lubricants, rate of penetration enhancers, and spotting fluid additives for water-based drilling fluids'19985,837,655'Purified paraffins as lubricants, rate of penetration enhancers, and spotting fluid additives for water-based drilling fluids'19985,671,810'Composition and method for relief of differential sticking during drilling'19975,605,879'Olefin isomers as lubricants, rate of penetration enhancers, and spotting fluid additives for water-based drilling fluids'19974,664,818'Drilling mud additive'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987Patents assigned to NEWPARK DRILLING FLUID INC (1)· patent assignee history
1987Based in Coppell, TX, US· patent location history
1997–2011Patents assigned to BAKER HUGHES INC (9)· patent assignee history
1997–2008Based in Cypress, TX, US· patent location history
1997Based in Houston, TX, US· patent location history
2011Based in Evergreen, CO, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAKER HUGHES INC | 9 | 1997–2011 |
| NEWPARK DRILLING FLUID INC | 1 | 1987 |
Locations
| Location | Patents | Span |
|---|---|---|
| Cypress, Texas, US | 10 | 1997–2008 |
| Evergreen, CO, US | 1 | 2011 |
| Houston, Texas, US | 1 | 1997 |
| Coppell, Texas, US | 1 | 1987 |