Inventor
Neil Johnston
Inventor
East Peoria, IL, US
Overview
Patents· 6 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 elsewhere29%
C04BLime, magnesia21%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests21%
F16JPistons14%
Y10TTechnical subjects covered by former us classification14%
PatentTitleYear
6,550,138'Piston pin assembly'20036,364,565'Piston pin assembly'20026,173,778'Storable liquid systems for use in cementing oil and gas wells'20015,975,220'Mud suspension control system'19995,547,506'Storable liquid cementitious slurries for cementing oil and gas wells'19965,447,197'Storable liquid cementitious slurries for cementing oil and gas wells'1995Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1995–2001Patents assigned to BJ SERVICES CO (4)· patent assignee history
1995–2001Based in Aberdeenshire, GB· patent location history
1996Based in Westhill, GB· patent location history
1999Based in West Hill, GB· patent location history
2002–2003Patents assigned to CATERPILLAR INC (2)· patent assignee history
2002–2003Based in East Peoria, IL, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BJ SERVICES CO | 4 | 1995–2001 |
| CATERPILLAR INC | 2 | 2002–2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| East Peoria, Illinois, US | 2 | 2002–2003 |
| Aberdeenshire, GB | 2 | 1995–2001 |
| West Hill, GB | 1 | 1999 |
| Westhill, GB | 1 | 1996 |