US2911327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leather article
Assignee: Dow Silicones Corp
•
Filing: 1956-08-07
•
Granted: 1959-11-03
•
Expires: 1976-08-07
Abstract
No abstract record available.
Inventors
- 👤 Charles F Dudley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:16
CPC Classifications
C; C14; C14C; C14C11/00; C14C11/003; Y; Y10; Y10S; Y10S277/00; Y10S277/935
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
37 words
A LEATHER ARTICLE SUITABLE FOR USE AS A SEMIPERMEABLE OIL SEAL COMPRISING LEATHER HAVING A SURFACE COATING OF A CURED SILOXANE CONSISTING ESSENTIALLY OF FROM 5 TO 20% BY WEIGHT OF A METHLHYDROGENPOLYSILOXANE AND FROM 80 TO
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |