Halbergerhutte GmbH
Saarbrucken-Brebach, DE· latest recorded location
Halbergerhutte GmbH is named on 3 US grants and 0 published applications in this corpus. Its most frequent classification is B22C (Foundry moulding).
- Granted patents
- 3
- Published applications
- 0
- Inventors
- 8
- Granted in 2026 so far
- 0
- Most recent grant
- 24 Nov 1992
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
By publication year.
Technology areas
Share of 3 documents
Recent patents
- Pipe joint for driving pipes laid underground by the driving technique24 Nov 1992US 5,165,822 A
- Apparatus for producing by the casting technique a cooling means for webs between adjacent cylinders of a cylinder block and a cylinder block produced accordingly15 Sep 1987US 4,693,294 A
- Slow fade inocculant and a process for the inocculation of melted cast iron29 Sep 1981US 4,292,075 A
No published applications.
Most cited
By later US patents
- Apparatus for producing by the casting technique a cooling means for webs between adjacent cylinders of a cylinder block and a cylinder block produced accordingly11US 4,693,294 A1987
- Pipe joint for driving pipes laid underground by the driving technique7US 5,165,822 A1992
- Slow fade inocculant and a process for the inocculation of melted cast iron6US 4,292,075 A1981