Inventor
Marshall D. Bishop
Inventor
Bartlesville, OK, US
Overview
Patents· 17 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 elsewhere24%
C08JWorking-up11%
B03DFlotation8%
C04BLime, magnesia8%
C08LCompositions of macromolecular compounds8%
C09DCoating compositions, e.g. paints, varnishes or lacquers5%
C10MLubricating compositions5%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions5%
Y10TTechnical subjects covered by former us classification5%
B03BSeparating solid materials using liquids or using pneumatic tables or jigs3%
PatentTitleYear
11,098,230Methods for drilling wellbores using thinner compositions202111,078,395Wellbore drilling compositions202110,787,599Sulfur-containing polyether surfactants for cement spacer fluids and other downhole applications20209,328,280'Additives for oil-based drilling fluids'20168,759,260'Wellbore fluid additives and methods of producing the same'20146,547,710'Sulfonated rubber compositions and processes therefor and therewith'20036,159,886'Clay composition containing a tannin and a method for producing bricks therefrom'20005,925,182'Stable liquid suspension compositions'19995,834,533'Stable liquid suspension compositions'19985,631,313'Suspending medium for particulate material'19975,132,008'Preparation of bis(alkylthio) alkanes or bis(arylthio) alkanes and use thereof'19925,091,448'Suspending medium for water soluble polymer'19925,073,253'Froth level measurement'19915,041,599'Catalytic synthesis of thionocarbamates from xanthates and amines'19914,966,688'Ore flotation employing amino mercaptothiadiazoles'19904,735,659'Compositions and a process for preparing water dispersible polymers'19884,726,912'Stable suspensions of carboxymethyl cellulose and their preparation'1988Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1988–2000Patents assigned to PHILLIPS PETROLEUM CO (11)· patent assignee history
1988–2021Based in Bartlesville, OK, US· patent location history
2003Patents assigned to CONOCOPHILLIPS CO (1)· patent assignee history
2014–2016Patents assigned to CHEVRON PHILLIPS CHEMICAL CO (2)· patent assignee history
2014Patents assigned to BISHOP MARSHALL D (1)· patent assignee history
2020–2021Patents assigned to CHEVRON PHILLIPS CHEMICAL CO LP (3)· patent assignee history
2021Based in Conroe, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PHILLIPS PETROLEUM CO | 11 | 1988–2000 |
| CHEVRON PHILLIPS CHEMICAL CO LP | 3 | 2020–2021 |
| CHEVRON PHILLIPS CHEMICAL CO | 2 | 2014–2016 |
| BISHOP MARSHALL Dself | 1 | 2014 |
| CONOCOPHILLIPS CO | 1 | 2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Bartlesville, OK, US | 16 | 1988–2021 |
| Conroe, Texas, US | 1 | 2021 |