Patent US2635536A successfully refreshed from Google Patents.
US2635536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mordanting
Assignee: EIDP Inc
•
Filing: 1947-08-07
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Granted: 1953-04-21
•
Expires: 1967-08-07
Abstract
No abstract record available.
Inventors
- 👤 Murray Otis Willard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:28
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
22 words
A PROCESS WHICH COMPRISES TREATING A WATER PERMEABLE PROTEIN WITH AN AQUEOUS ALKALINE SOLUTION OF A NAPHTHOL CARBONAMIDE OF THE GENERAL FORMULA:
References Cited (Backward Citations)
US1899856A
Cited
US1562828A
Cited
US2054261A
Cited
US2124371A
Cited
US2179239A
Cited
US2156821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |