Computalog Limited
Calgary, CA· latest recorded location
Computalog Limited is named on 8 US grants and 1 published applications in this corpus. Its most frequent classification is E21B (Earth or rock drilling).
- Granted patents
- 8
- Published applications
- 1
- Inventors
- 8
- Granted in 2026 so far
- 0
- Most recent grant
- 1 Jun 2004
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
By publication year.
Technology areas
Share of 9 documents
Recent patents
- Perforating gun firing head with vented block for holding detonator1 Jun 2004US 6,742,602 B2
- Downhole shock absorber2 Jul 2002US 6,412,614 B1
- Dynamic orienting reference system for directional drilling27 Feb 2001US 6,192,748 B1
- Pulser14 Dec 1999US 6,002,643 A
- Centralizers for a downhole tool10 Aug 1999US 5,934,378 A
Most cited
By later US patents
- Dynamic orienting reference system for directional drilling248US 6,192,748 B12001
- Perforating gun firing head with vented block for holding detonator77US 6,742,602 B22004
- Downhole shock absorber42US 6,412,614 B12002
- Pulser37US 6,002,643 A1999
- Compressive seal and pressure control arrangements for downhole tools27US 5,067,874 A1991