US3341279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modification of reactive hydrogenand halogen-containing materials with thioxane dioxide
Assignee: GAF Chemicals Corp
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Filing: 1961-05-22
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Granted: 1967-09-12
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Expires: 1981-05-22
Abstract
No abstract record available.
Inventors
- 👤 Harlan B Freyermuth
- 👤 David I Randall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:45
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/272; D06M13/278
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS FOR IMPROVING THE PROPERTIES OF FIBROUS MATERIAL WHILE RETAINING THE FIBER STRUCTURE THEREOF COMPRISING TREATING FIBROUS MATERIAL CONTAINING A MEMBER OF THE GROUP CONSISTING OF REACTIVE HYDROGEN ATOMS AND REACTIVE HALIDE ATOMS WITH AN AQUEOUS ALKALINE MEDIUM CONTAINING ABOUT 0.5 TO 50% BY WEIGHT OF 1,4-THIOXANE DIOXIDE AND THEN DRYING AND CURING THE TREATED MATERIAL AT A TEMPERATURE OF AT LEAST ABOUT 250*F.
Claim 2
Dependent Claim
65 words
A PROCESS FOR IMPROVING THE PROPERTIES OF FIBROUS MATERIAL WHILE RETAINING THE FIBER STRUCTURE THEREOF COMPRISING TREATING FIBROUS MATERIAL CONTAINING A MEMBER OF THE GROUP CONSISTING OF REACTIVE HYDROGEN ATOMS AND REACTIVE HALIDE ATOMS WITH AN AQUEOUS ALKALINE MEDIUM CONTAINING ABOUT 0.5 TO 50% BY WEIGHT OF 1,4-THIOXANE DIOXIDE AND THEN DRYING AND CURING THE TREATED MATERIAL AT A TEMPERATURE OF AT LEAST ABOUT 250*F.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |