Hydra Corporation
Houston, TX, US· latest recorded location
Hydra Corporation is named on 4 US grants and 0 published applications in this corpus. Its most frequent classification is B29C (Shaping or joining of plastics).
- Granted patents
- 4
- Published applications
- 0
- Inventors
- 8
- Granted in 2026 so far
- 0
- Most recent grant
- 26 Jun 1990
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
By publication year.
Technology areas
Share of 4 documents
- B29CShaping or joining of plastics2
- B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding2
- B29LIndexing scheme associated with subclass b29c, relating to particular articles2
- B30BPresses in general2
- Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2
- B28BShaping clay or other ceramic compositions1
- B41JTypewriters1
- B63BShips or other waterborne vessels1
- G05BControl or regulating systems in general1
Recent patents
- Molding apparatus and method26 Jun 1990US 4,937,025 A
- Method and apparatus for manufacturing articles by pressing and sintering11 Sep 1984US 4,470,803 A
- Printer system having local control for dynamically alterable printing19 Sep 1978US 4,114,750 A
- Navigational buoy11 Jul 1978US 4,099,281 A
No published applications.
Most cited
By later US patents