Longyear Company
Stone Mountain, GA, US· latest recorded location
Longyear Company is named on 17 US grants and 0 published applications in this corpus. Its most frequent classification is E21B (Earth or rock drilling).
- Granted patents
- 17
- Published applications
- 0
- Inventors
- 17
- Granted in 2026 so far
- 0
- Most recent grant
- 11 Apr 1995
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
By publication year.
Technology areas
Share of 17 documents
Recent patents
- Drill rig safety shutdown device11 Apr 1995US 5,404,959 A
- Overcenter toggle latch apparatus5 Jul 1994US 5,325,930 A
- Drilling latch apparatus7 Dec 1993US 5,267,620 A
- Rod handler apparatus2 Feb 1993US 5,183,366 A
- Built-in rack apparatus21 Apr 1992US 5,105,687 A
No published applications.
Most cited
By later US patents