Patent US3522140A successfully refreshed from Google Patents.
US3522140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asbestos-foam laminates
Assignee: Bayer Corp
•
Filing: 1968-03-29
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Granted: 1970-07-28
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Expires: 1988-03-29
Abstract
No abstract record available.
Inventors
- 👤 Rowland S Hartzell
- 👤 Gene Gerek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:27
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/12; B29K; B29K2105/00; B29K2105/06; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249983; Y10T428/249987; Y10T428/24999; Y10T428/28; Y10T428/2848; Y10T428/2852; Y10T428/2878; Y10T428/2891; Y10T428/31504; Y10T428/31652
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2788052A
Cited
US3262827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |