US2539704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of hydroxylated polymers
Assignee: Uniroyal Inc
•
Filing: 1948-07-07
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Granted: 1951-01-30
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Expires: 1968-07-07
Abstract
No abstract record available.
Inventors
- 👤 Dwight L Schoene
- 👤 Victor S Chambers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:13
CPC Classifications
C; C08; C08B; C08B31/00; A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/28; C08B11/00; C08B11/02; C08B11/04; Y; Y10; Y10S; Y10S8/00; Y10S8/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A METHOD WHICH COMPRISES SUBJECTING A POLYSACCHARIDE, SELECTED FROM THE CLASS CONSISTING OF STARCH AND CELLULOSE, TO CHEMICAL REACTION WITH A MONO VINYL SULFONE OF THE FORMULA CH2=CHSO2R, WHERE R IS ALKYL HYDROCARBON HAVING FROM 1 TO 4 CARBON ATOMS.
Claim 2
Independent Claim
40 words
A METHOD WHICH COMPRISES SUBJECTING A POLYSACCHARIDE, SELECTED FROM THE CLASS CONSISTING OF STARCH AND CELLULOSE, TO CHEMICAL REACTION WITH A MONO VINYL SULFONE OF THE FORMULA CH2=CHSO2R, WHERE R IS ALKYL HYDROCARBON HAVING FROM 1 TO 4 CARBON ATOMS.
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) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |