B28B 1/528
For producing corrugated sheets
Official title: {for producing corrugated sheets (B28B1/526, B28B1/527 take precedence)}
B28B1/528 (For producing corrugated sheets) appears on 3 US grants and 0 published applications in this corpus.
Search patents in B28B- Granted patents
- 3
- Published applications
- 0
- Assignees
- 3
- Inventors
- 5
- Latest grant
- 19 Nov 1996
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method of making a continuous ceramic fiber reinforced heat exchanger tube19 Nov 1996US 5,575,067 AHexcel Corporation
- Manufacture of surface elements28 Aug 1979US 4,165,999 AEuroc Development AB
- Method and apparatus for making asbestos-cement boards17 Apr 1979US 4,149,930 AFulgurltwerke Seelze und Eichriede in Luthe bel Hannover Adolf Oesterheld
No published applications in this class yet.
Most cited
By later US patents
- Method of making a continuous ceramic fiber reinforced heat exchanger tube8US 5,575,067 AHexcel Corporation · 1996
- Method and apparatus for making asbestos-cement boards5US 4,149,930 AFulgurltwerke Seelze und Eichriede in Luthe bel Hannover Adolf Oesterheld · 1979
- Manufacture of surface elements4US 4,165,999 AEuroc Development AB · 1979