US3621092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stamping process
Assignee: Azdel Inc
•
Filing: 1969-02-20
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Granted: 1971-11-16
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Expires: 1989-02-20
Abstract
Abstract A process for stamping a stampable glass fiber reinforced composite made from thermoplastic resin and a lofty glass fiber mat.
Inventors
- 👤 Peter H Hofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:25
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/02; B29C51/00; B29C51/08; B29C51/082; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/46; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/10; B29K2023/12; B29K2025/00; B29K2027/00; B29K2027/06; B29K2101/00; B29K2101/12; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0854; B29K2105/25; B29K2105/253; B29K2105/256; B29K2309/00; B29K2309/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
30 words
A process as in claim 1 in which said blank comprises about 40 to 90 weight percent of thermoplastic resin and about 10 to 60 weight percent of glass fiber.
Claim 2
Dependent Claim
13 words
A process as in claim 2 in which said thermoplastic resin is polypropylene.
Claim 3
Dependent Claim
13 words
A process as in claim 2 in which said thermoplastic resin is polystyrene.
Claim 4
Dependent Claim
15 words
A process as in claim 2 in which said thermoplastic resin is a nylon resin.
Claim 5
Dependent Claim
13 words
A process as in claim 2 in which said thermoplastic resin is polyvinylchloride.
Claim 6
Dependent Claim
15 words
A process as in claim 2 in which said thermoplastic resin is a styrene-acrylonitrile copolymer.
References Cited (Backward Citations)
US2045471A
Cited
US2267316A
Cited
US2356826A
Cited
US2433643A
Cited
US3113788A
Cited
US3152200A
Cited
US3312224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |