Patent US2516283A successfully refreshed from Google Patents.
US2516283A
Expired / Lapsed
US
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Resin impregnation of a dialdehyde tanned hide
Assignee: Individual
•
Filing: 1947-03-20
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Granted: 1950-07-25
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Expires: 1967-03-20
Abstract
No abstract record available.
Inventors
- 👤 Adolph H Winheim
- 👤 Edward E Doherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:20
CPC Classifications
C; C14; C14C; C14C3/00; C14C3/02; C14C3/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN THE PRODUCTION OF LEATHER FROM HIDE, THE PROCESS WHICH COMPRISES TANNING A HIDE WITH AN AQUEOUS SOLUTION OF A LOWER MOLECULAR ALIPHATIC DIALDEHYDE, TREATING THE SO-TANNED HIDE WITH AN AQUEOUS SOLUTION OF A REACTIVE-RESIN-FORMING COMPOSITION CONTAINING AN ALDEHYDE AND A SLIGHT EXCESS OVER RESIN-FORMING PROPORTIONS OF A COMPONENT REACTIVE WITH SAID ALDEHYDE TO FORM A RESIN, AND THEN CAUSING SAID RESIN-FORMING COMPOSITION TO CONDENSE IN SITU.
Claim 2
Dependent Claim
67 words
IN THE PRODUCTION OF LEATHER FROM HIDE, THE PROCESS WHICH COMPRISES TANNING A HIDE WITH AN AQUEOUS SOLUTION OF A LOWER MOLECULAR ALIPHATIC DIALDEHYDE, TREATING THE SO-TANNED HIDE WITH AN AQUEOUS SOLUTION OF A REACTIVE-RESIN-FORMING COMPOSITION CONTAINING AN ALDEHYDE AND A SLIGHT EXCESS OVER RESIN-FORMING PROPORTIONS OF A COMPONENT REACTIVE WITH SAID ALDEHYDE TO FORM A RESIN, AND THEN CAUSING SAID RESIN-FORMING COMPOSITION TO CONDENSE IN SITU.
References Cited (Backward Citations)
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US1841797A
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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) | 1953-07-24 | 1954-01-23 | 1954-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-24 | 1958-01-23 | 1958-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-24 | 1962-01-23 | 1962-07-25 | $7700.00 | Window Closed / Lapsed |