US2512708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resorcinol-aldehyde tanning product
Assignee: EIDP Inc
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Filing: 1946-11-01
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Granted: 1950-06-27
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Expires: 1966-11-01
Abstract
No abstract record available.
Inventors
- 👤 Harold C Beachell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:29
CPC Classifications
C; C14; C14C; C14C3/00; C14C3/02; C14C3/08; C14C3/18; C08; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/20; C08G8/22; C08K; C08K3/00; C08K3/38; Y; Y10; Y10S; Y10S8/00; Y10S8/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A TANNING COMPOSITION COMPRISING A WATERSOLUBLE TANNING POLYMER OF RESORCINOL WITH AN ALDEHYDE OF LESS THAN TWELVE CARBON ATOMS, THE RESORCINOL:ALDEHYDE RATIO BEING FROM 2:1 TO 5:1 AND THE COMPOSITION CONTAINING ADDITIONALLY FROM 25-150%, BASED UPON THE WEIGHT OF POLYMER, OF A WATER-SOLUBLE BORON-OXYGEN COMPOUND SELECTED FROM THE GROUP CONSISTING OF BORIC ACID AND AN ALKALI BORATE AND MIXTURES THEREOF.
Claim 2
Dependent Claim
60 words
A TANNING COMPOSITION COMPRISING A WATERSOLUBLE TANNING POLYMER OF RESORCINOL WITH AN ALDEHYDE OF LESS THAN TWELVE CARBON ATOMS, THE RESORCINOL:ALDEHYDE RATIO BEING FROM 2:1 TO 5:1 AND THE COMPOSITION CONTAINING ADDITIONALLY FROM 25-150%, BASED UPON THE WEIGHT OF POLYMER, OF A WATER-SOLUBLE BORON-OXYGEN COMPOUND SELECTED FROM THE GROUP CONSISTING OF BORIC ACID AND AN ALKALI BORATE AND MIXTURES THEREOF.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |