Patent US1772258A successfully refreshed from Google Patents.
US1772258A
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Process for unhairing and preparing hides for tanning
Assignee: Rohm and Haas Co
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Filing: 1925-07-07
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Granted: 1930-08-05
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Expires: 1945-07-07
Abstract
No abstract record available.
Inventors
- 👤 Charles Joseph Michel Ma Petit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:35
CPC Classifications
C; C14; C14C; C14C1/00; C14C1/06; C14C1/065; C12; C12N; C12N1/00; C12N1/38; C12N9/00; C12N9/14; C12N9/48; C12N9/50; C12N9/58; C12N9/62; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/913; Y10S435/917; Y10S435/918; Y10S435/931; Y10S435/933
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1933-08-04 | 1934-02-03 | 1934-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-08-04 | 1938-02-03 | 1938-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-08-04 | 1942-02-03 | 1942-08-05 | $7700.00 | Window Closed / Lapsed |