D21H 5/2692
Assembly of several preformed webs, at least one of which has been
Official title: {Assembly of several preformed webs, at least one of which has been formed by dry method}
D21H5/2692 (Assembly of several preformed webs, at least one of which has been) appears on 7 US grants and 0 published applications in this corpus.
Search patents in D21H- Granted patents
- 7
- Published applications
- 0
- Assignees
- 5
- Inventors
- 10
- Latest grant
- 9 Mar 1982
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Composite nonwoven web9 Mar 1982US 4,318,774 APowell Corporation
- Apparatus for forming multi-ply fibrous sheets21 Feb 1978US 4,074,959 AKarl Kroyer St. Anne's Limited
- Multi-ply fibrous sheets having a wet-laid ply and a dry-laid ply6 Sep 1977US 4,046,622 AKarl Kroyer St. Anne's Limited
- Apparatus for the twin-wire air laying of fibrous pads30 Nov 1976US 3,994,047 AInternational Paper Company
- Internally adhesively bonded fibrous web31 Aug 1976US 3,978,257 AKimberly-Clark Corporation
No published applications in this class yet.
Most cited
By later US patents
- Internally adhesively bonded fibrous web69US 3,978,257 AKimberly-Clark Corporation · 1976
- Composite nonwoven web47US 4,318,774 APowell Corporation · 1982
- Multi-ply paper and paperboard having a wet-laid ply and a dry-laid ply22US 3,954,554 AKarl Kroyer St. Anne's Limited · 1976
- Apparatus for forming multi-ply fibrous sheets19US 4,074,959 AKarl Kroyer St. Anne's Limited · 1978
- Multi-ply fibrous sheets having a wet-laid ply and a dry-laid ply16US 4,046,622 AKarl Kroyer St. Anne's Limited · 1977