US3306926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparation of leathertreating compounds
Assignee: Battelle Memorial Institute Inc
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Filing: 1962-03-23
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Granted: 1967-02-28
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Expires: 1982-03-23
Abstract
No abstract record available.
Inventors
- 👤 Maynard B Neher
- 👤 Victor G Vely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:04
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/22; C08G18/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A PROCESS FOR PREPARATION OF A SUBSTANTIALLY MONOMERIC MODIFIED ORGANIC ISOCYANATE LEATER-TREATING COMPOSITION CHARACTERIZED BY A STRUCTURAL FORMULA
Claim 2
Dependent Claim
18 words
A PROCESS FOR PREPARATION OF A SUBSTANTIALLY MONOMERIC MODIFIED ORGANIC ISOCYANATE LEATER-TREATING COMPOSITION CHARACTERIZED BY A STRUCTURAL FORMULA
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |