US3518157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming and curing fibrous materials
Assignee: Johns Manville Corp
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Filing: 1967-05-26
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Granted: 1970-06-30
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Expires: 1987-05-26
Abstract
No abstract record available.
Inventors
- 👤 Rupert Douglas Terry
- 👤 George John Hannes
- 👤 William Peter Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:38
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0003; B29C; B29C67/00; B29C67/24; B29C67/248; B29C67/249; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/50; B29C70/52; B29C70/521; D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/70; B29K; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0854; B29K2309/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |