US2548774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shrinkproofing wool
Assignee: Individual
•
Filing: 1949-07-06
•
Granted: 1951-04-10
•
Expires: 1969-07-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Mayne R Coe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:17
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/07; D06M11/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A PROCESS OF SHRINK-PROOFING WOOL WHICH COMPRISES TREATING THE WOOL FOR A SHORT PERIOD OF TIME IN A CLOSED CHAMBER UNDER SUPERATMOSPHERIC PRESSURE CONDITIONS AND AT A TEMPERATURE ABOVE 100* C. WITH AN ALKALI METAL PREMANGANATE IN AQUEOUS SOLUTION, THE STRENGTH OF THE PERMANGANATE EMPLOYED BEING WITHIN THE RANGE OF .001 TO .1%.
Claim 2
Dependent Claim
53 words
A PROCESS OF SHRINK-PROOFING WOOL WHICH COMPRISES TREATING THE WOOL FOR A SHORT PERIOD OF TIME IN A CLOSED CHAMBER UNDER SUPERATMOSPHERIC PRESSURE CONDITIONS AND AT A TEMPERATURE ABOVE 100* C. WITH AN ALKALI METAL PREMANGANATE IN AQUEOUS SOLUTION, THE STRENGTH OF THE PERMANGANATE EMPLOYED BEING WITHIN THE RANGE OF .001 TO .1%.
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) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |