US3477898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leather substitute composition
Assignee: Tenneco Polymers Inc
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Filing: 1965-09-14
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Granted: 1969-11-11
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Expires: 1985-09-14
Abstract
No abstract record available.
Inventors
- 👤 Fred Buff
- 👤 Joseph Isadore Gross
- 👤 Lawrence William Healy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:51
CPC Classifications
B; B32; B32B; B32B27/00; D; D06; D06N; D06N3/00; D06N3/0002; D06N3/0013; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/249921; Y10T428/249953; Y10T428/249955; Y10T428/249959; Y10T442/00; Y10T442/30; Y10T442/3325
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) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |