Patent US2672397A successfully refreshed from Google Patents.
US2672397A
Expired / Lapsed
US
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Reaction of wool with beta-propiolactone and water
Assignee: Individual
•
Filing: 1952-08-22
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Granted: 1954-03-16
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Expires: 1972-08-22
Abstract
No abstract record available.
Inventors
- 👤 Harold P Lundgren
- 👤 Rose William Gordon
- 👤 Jones Harrison Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:24
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/224; D06M13/228
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A PROCESS FOR CHEMICALLY MODIFYING WOOL COMPRISING REACTING WOOL WITH BETA-PROPIOLACTONE AND WATER, THE PROPORTION OF WATER BEING AT LEAST ABOUT 10%, BASED UPON THE WEIGHT OF DRY WOOL.
Claim 2
Dependent Claim
29 words
A PROCESS FOR CHEMICALLY MODIFYING WOOL COMPRISING REACTING WOOL WITH BETA-PROPIOLACTONE AND WATER, THE PROPORTION OF WATER BEING AT LEAST ABOUT 10%, BASED UPON THE WEIGHT OF DRY WOOL.
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) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |