US3340335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making composite fibrous materials
Assignee: Dunlop Rubber Co Ltd
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Filing: 1963-09-24
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Granted: 1967-09-05
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Expires: 1983-09-24
Abstract
No abstract record available.
Inventors
- 👤 Winchcombe John Jeremy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:19
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/005; D04H3/009; C; C08; C08J; C08J9/00; C08J9/0085; C08K; C08K7/00; C08K7/02; D04H1/00; D04H1/40; D04H1/58; D04H1/64; D04H1/68; D04H3/08; D04H3/10; D04H3/105; D04H3/12; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A METHOD OF MAKING A COMPOSITE MATERIAL COMPRISING A FIBROUS CONSTITUENT AND A POLYURETHANE FOAM CONSTITUENT, COMPRISING TWO STAGES, IN THE FIRST OF WHICH A LIQUID COMPOSITION REPRESENTING ONE PART OF A POLYURETHANE FOAM-FORMING MIXTURE IS INTRODUCED INTO AN ASSEMBLY OF FIBRES, AND SUBSEQUENTLY IN THE SECOND STAGE A VAPOUR, WHICH REPRESENTS THE COMPLEMENTARY PART OF THE POLYURETHANE FOAM-FORMING MIXTURE AND WHICH COMPRISES
Claim 2
Independent Claim
63 words
A METHOD OF MAKING A COMPOSITE MATERIAL COMPRISING A FIBROUS CONSTITUENT AND A POLYURETHANE FOAM CONSTITUENT, COMPRISING TWO STAGES, IN THE FIRST OF WHICH A LIQUID COMPOSITION REPRESENTING ONE PART OF A POLYURETHANE FOAM-FORMING MIXTURE IS INTRODUCED INTO AN ASSEMBLY OF FIBRES, AND SUBSEQUENTLY IN THE SECOND STAGE A VAPOUR, WHICH REPRESENTS THE COMPLEMENTARY PART OF THE POLYURETHANE FOAM-FORMING MIXTURE AND WHICH COMPRISES
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |