Inventor
Stephen G. Southland
Inventor
Spring, TX, US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling47%
B01DSeparation5%
B22FWorking metallic powder5%
B23PMetal-working not otherwise provided for5%
B29CShaping or joining of plastics5%
B33YAdditive manufacturing, i.e. manufacturing of three-dimensional [3d] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3d printing, stereolithography or selective laser sintering5%
F24FAir-conditioning5%
G05BControl or regulating systems in general5%
Y02PClimate change mitigation technologies in the production or processing of goods5%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
PatentTitleYear
7,097,692'Air filter arrangement and method of making same'20066,564,886'Drill bit with rows of cutters mounted to present a serrated cutting edge'20036,353,771'Rapid manufacturing of molds for forming drill bits'20026,244,365'Unplanar non-axisymmetric inserts'20016,164,394'Drill bit with rows of cutters mounted to present a serrated cutting edge'20006,021,858'Drill bit having trapezium-shaped blades'20005,947,216'Cutter assembly for rock bits with back support groove'19995,722,499'Multiple diamond layer polycrystalline diamond composite cutters'19984,852,671'Diamond cutting element'19894,794,995'Orientable fluid nozzle for drill bits'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989Patents assigned to DIAMANT BOART STATABIT USA INC (1)· patent assignee history
1989Patents assigned to DIAMANT BOART STRATABIT USA (1)· patent assignee history
1989Based in Houston, TX, US· patent location history
1998–2003Patents assigned to SMITH INTERNATIONAL (7)· patent assignee history
1998Based in Humble, TX, US· patent location history
1999–2003Based in Spring, TX, US· patent location history
2006Patents assigned to SDS IND LLC (1)· patent assignee history
2006Based in Magnolia, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SMITH INTERNATIONAL | 7 | 1998–2003 |
| DIAMANT BOART STATABIT USA INC | 1 | 1989 |
| DIAMANT BOART STRATABIT USA | 1 | 1989 |
| SDS IND LLC | 1 | 2006 |
Locations
| Location | Patents | Span |
|---|---|---|
| Spring, Texas, US | 6 | 1999–2003 |
| Houston, Texas, US | 2 | 1989 |
| Magnolia, Texas, US | 1 | 2006 |
| Humble, Texas, US | 1 | 1998 |