Inventor
James J. W. Nahm
Inventor
Houston, TX, US
Overview
Patents· 27 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C04Bprimary
C04BLime, magnesia24%
C09KMaterials for miscellaneous applications, not provided for elsewhere23%
E21BEarth or rock drilling19%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management17%
Y02PClimate change mitigation technologies in the production or processing of goods9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
F16LPipes2%
E02BHydraulic engineering1%
E02DFoundations1%
PatentTitleYear
7,108,072'Lubrication and self-cleaning system for expansion mandrel'20066,557,640'Lubrication and self-cleaning system for expansion mandrel'20036,085,839'Method of thermally insulating a wellbore'20006,063,737'Aqueous displacement fluid compositions for use in wellbores'20005,515,921'Water-base mud conversion for high tempratice cementing'19965,488,991'Alumina wellbore cement composition'19965,476,144'Conversion of oil-base mud to oil mud-cement'19955,464,060'Universal fluids for drilling and cementing wells'19955,382,290'Conversion of oil-base mud to oil mud-cement'19955,370,181'Anti gas-migration cementing'19945,358,049'Conversion of emulsion mud to cement'19945,351,759'Slag-cement displacement by direct fluid contact'19945,333,690'Cementing with blast furnace slag using spacer'19945,332,040'Process to cement a casing in a wellbore'19945,330,006'Oil mud displacement with blast furnace slag/surfactant'19945,316,083'Blast furnace slag spacer'19945,314,022'Dilution of drilling fluid in forming cement slurries'19945,314,031'Directional drilling plug'19945,309,997'Well fluid for in-situ borehole repair'19945,309,999'Cement slurry composition and method to cement wellbore casings in salt formations'19945,307,876'Method to cement a wellbore in the presence of carbon dioxide'19945,305,831'Blast furnace slag transition fluid'19945,277,519'Well drilling cuttings disposal'19945,275,511'Method for installation of piles in offshore locations'19945,226,961'High temperature wellbore cement slurry'19935,213,160'Method for conversion of oil-base mud to oil mud-cement'19933,956,140'Drilling fluids'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976Patents assigned to DRESSER IND (1)· patent assignee history
1976–2000Based in Houston, TX, US· patent location history
1993–2006Patents assigned to SHELL OIL CO (26)· patent assignee history
2003Based in Fullbrock, CA, US· patent location history
2006Based in Fuldbrock, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SHELL OIL CO | 26 | 1993–2006 |
| DRESSER IND | 1 | 1976 |
Locations
| Location | Patents | Span |
|---|---|---|
| Houston, Texas, US | 25 | 1976–2000 |
| Fuldbrock, California, US | 1 | 2006 |
| Fullbrock, California, US | 1 | 2003 |