Inventor
Terry R. Matthias
Inventor
Upton St. Leonards, GB
Overview
Patents· 26 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling48%
Y10TTechnical subjects covered by former us classification15%
B22FWorking metallic powder6%
B23BTurning6%
B24DTools for grinding, buffing or sharpening6%
C04BLime, magnesia6%
F16CShafts6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry2%
C22CAlloys2%
PatentTitleYear
10,000,975Cutting element201810,000,976Cutting element20189,156,136'Systems and methods for vapor pressure leaching polycrystalline diamond cutter elements'20156,601,662'Polycrystalline diamond cutters with working surfaces having varied wear resistance while maintaining impact strength'20036,575,350'Method of applying a wear-resistant layer to a surface of a downhole component'20036,481,511'Rotary drill bit'20026,439,327'Cutting elements for rotary drill bits'20026,435,058'Rotary drill bit design method'20026,234,261'Method of applying a wear-resistant layer to a surface of a downhole component'20016,145,607'Preform cutting elements for rotary drag-type drill bits'20006,098,729'Preform cutting elements for rotary drill bits'20006,082,474'Elements faced with superhard material'20006,011,232'Manufacture of elements faced with superhard material'20005,862,873'Elements faced with superhard material'19995,819,862'Downhole components for use in subsurface drilling'19985,788,001'Elements faced with superhard material'19985,769,175'Cutter assemblies for rotary drill bits'19985,740,874'Cutting elements for rotary drill bits'19985,617,928'Elements faced with superhard material'19975,611,649'Elements faced with superhard material'19975,590,728'Elements faced with superhard material'19974,862,977'Drill bit and cutter therefor'19894,727,946'Rotary drill bits'19884,669,556'Drill bit and cutter therefor'19874,596,296'Rotary drill bits'19864,570,725'Drill bit cutter'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986–1988Patents assigned to NL INDUSTRIES INC (3)· patent assignee history
1986–2015Based in Gloucester, GB· patent location history
1986Based in Abbeydale, GB· patent location history
1997–1999Patents assigned to CAMCO DRILLING GROUP LTD (6)· patent assignee history
1997–2000Based in Longlevens, GB· patent location history
1998Patents assigned to CAMCO DRILLING GROUP LTD OF HY (1)· patent assignee history
2000–2002Patents assigned to CAMCO INT UK LTD (6)· patent assignee history
2000–2018Based in Upton St. Leonards, GB· patent location history
2000Based in St. Leonards on Sea, GB· patent location history
2018Patents assigned to NOV DOWNHOLE EURASIA LTD (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CAMCO DRILLING GROUP LTD | 6 | 1997–1999 |
| CAMCO INT UK LTD | 6 | 2000–2002 |
| NL INDUSTRIES INC | 3 | 1986–1988 |
| NOV DOWNHOLE EURASIA LTD | 2 | 2018 |
| CAMCO DRILLING GROUP LTD OF HY | 1 | 1998 |
Locations
| Location | Patents | Span |
|---|---|---|
| Upton St. Leonards, GB | 10 | 2000–2018 |
| Longlevens, GB | 9 | 1997–2000 |
| Gloucester, GB | 5 | 1986–2015 |
| St. Leonards on Sea, GB | 1 | 2000 |
| Abbeydale, GB | 1 | 1986 |