US2728692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preventing shrinkage of wool
Assignee: Dow Silicones Corp
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Filing: 1953-04-20
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Granted: 1955-12-27
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Expires: 1973-04-20
Abstract
No abstract record available.
Inventors
- 👤 Firth L Dennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:22
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2369; Y10T442/2385; Y10T442/2762
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A METHOD OF TREATING WOOL FABRICS TO PREVENT THE SHRINKAGE THEREOF DURING WASHING WHICH COMPRISES TREATING THE FABRIC WITH AT LEAST .5% BY WEIGHT BASED ON THE WEIGHT OF THE FABRIC OF A COMPOSITION COMPOSED ESSENTIALLY OF (1) FROM 25 TO 95 PER CENT BY WEIGHT OF A BENZENE SOLUBLE DIORGANOPOLYSILOXANE HAVING A VISCOSITY OF A LEAST 1,000,000 CS. AT 25* C., IN WHICH SILOXANE THE ORGANIC RADICALS ARE SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ALKENYL RADICALS OF LESS THAN 5 CARBON ATOMS, AND PHENYL RADICALS, AT LEAST 50 PER CENT OF THE TOTAL NUMBER OF RADICALS BEING THE DEFINED ALIPHATIC RADICALS AND (2) FROM 5 TO 75 PER CENT BY WEIGHT OF A BENZENE SOLUBLE SILOXANE OF THE FORMULA
Claim 2
Independent Claim
122 words
A METHOD OF TREATING WOOL FABRICS TO PREVENT THE SHRINKAGE THEREOF DURING WASHING WHICH COMPRISES TREATING THE FABRIC WITH AT LEAST .5% BY WEIGHT BASED ON THE WEIGHT OF THE FABRIC OF A COMPOSITION COMPOSED ESSENTIALLY OF (1) FROM 25 TO 95 PER CENT BY WEIGHT OF A BENZENE SOLUBLE DIORGANOPOLYSILOXANE HAVING A VISCOSITY OF A LEAST 1,000,000 CS. AT 25* C., IN WHICH SILOXANE THE ORGANIC RADICALS ARE SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ALKENYL RADICALS OF LESS THAN 5 CARBON ATOMS, AND PHENYL RADICALS, AT LEAST 50 PER CENT OF THE TOTAL NUMBER OF RADICALS BEING THE DEFINED ALIPHATIC RADICALS AND (2) FROM 5 TO 75 PER CENT BY WEIGHT OF A BENZENE SOLUBLE SILOXANE OF THE 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) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |