US3527564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for carbonizing fibrous materials
Assignee: JP Stevens and Co Inc
•
Filing: 1968-04-15
•
Granted: 1970-09-08
•
Expires: 1988-04-15
Abstract
No abstract record available.
Inventors
- 👤 Donald R Moore
- 👤 Stanley E Ross
- 👤 Giuliana C Tesoro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:44
CPC Classifications
D; D01; D01F; D01F9/00; D01F9/08; D01F9/12; D01F9/14; D01F9/16; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2828228A
Cited
DE1087109B
Cited
US2832745A
Cited
DE1092880B
Cited
US3068060A
Cited
US3235323A
Cited
US3294489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |