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Patent US2886401A successfully refreshed from Google Patents.
US2886401A
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Tanning with periodate oxypolysaccharides
Assignee: Individual
•
Filing: 1957-11-15
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Granted: 1959-05-12
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Expires: 1977-11-15
Abstract
No abstract record available.
Inventors
- 👤 Percy A Wells
- 👤 Edward M Filachione
- 👤 Martin L Fein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:20
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/18; C14; C14C; C14C3/00; C14C3/02; C14C3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A PROCESS OF TANNING A HIDE COMPRISING APPLYING AN AQUEOUS SOLUTION OF A PERIODATE OXYPOLYSACCHARIDE CONTAINING AT LEAST ABOUT 30% DIALDEHYDE UNITS OF THE FORMULA
Claim 2
Dependent Claim
25 words
A PROCESS OF TANNING A HIDE COMPRISING APPLYING AN AQUEOUS SOLUTION OF A PERIODATE OXYPOLYSACCHARIDE CONTAINING AT LEAST ABOUT 30% DIALDEHYDE UNITS OF THE FORMULA
References Cited (Backward Citations)
US1539517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |