Trefilunion
Saint Dizier, FR· latest recorded location
Trefilunion is named on 3 US grants and 0 published applications in this corpus. Its most frequent classification is B21C (Manufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products).
- Granted patents
- 3
- Published applications
- 0
- Inventors
- 2
- Granted in 2026 so far
- 0
- Most recent grant
- 8 Jun 1982
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
By publication year.
Technology areas
Share of 3 documents
- B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products2
- B24CAbrasive or related blasting with particulate material2
- B21FWorking or processing of metal wire1
- B28BShaping clay or other ceramic compositions1
- E04CStructural elements1
- F16LPipes1
- Y10TTechnical subjects covered by former us classification1
Recent patents
- Process and apparatus for descaling rod8 Jun 1982US 4,333,275 A
- Process and installation for mechanical descaling steel wire27 Nov 1979US 4,175,412 A
- Method of producing tubular lattice reinforcement for reinforced concrete tubular pipe having a socket at one end thereof4 Apr 1978US 4,082,120 A
No published applications.
Most cited
By later US patents