Patent US2579871A successfully refreshed from Google Patents.
US2579871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Divinyl sulfone tanned proteins
Assignee: Uniroyal Inc
•
Filing: 1949-06-09
•
Granted: 1951-12-25
•
Expires: 1969-06-09
Abstract
No abstract record available.
Inventors
- 👤 Dwight L Schoene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:16
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/272; D06M13/278; C; C14; C14C; C14C3/00; C14C3/02; C14C3/08; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/842; Y10S8/00; Y10S8/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
21 words
A METHOD OF TREATING WOOL WHICH COMPRISES REACTING THE PROTEIN THEREOF WITH DIVINYL SULFONE IN THE PRESENCE OF AN ALKALINE CATALYST.
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) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |