US2794014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble heteropolymers of acrylic acid, allyl alcohol, and sulfur dioxide and processes for producing the same
Assignee: Dow Chemical Co
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Filing: 1953-10-15
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Granted: 1957-05-28
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Expires: 1973-10-15
Abstract
No abstract record available.
Inventors
- 👤 Robert R Dreisbach
- 👤 John F Mulloy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:21
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/20; C08G75/205; C08G75/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A WATER-SOLUBLE COPOLYMER OF ALLYL ALCOHOL, SULFUR DIOXIDE AND AT LEAST ONE ACID FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ACIDS, THE AMOUNT OF ALLYL ALCOHOL BEING FROM 16 TO 40 PERCENT, THAT OF SULFUR DIOXIDE BEING FROM 1 TO 43 PERCENT, AND THAT OF THE ACID BEING FROM 20 TO 60 PERCENT OF THE POLYMER WEIGHT, THE RELATIVE AMOUNTS OF EACH CONSTITUENT BEING CHOSEN SO AS TO BE REPRESENTED BY ANY POINT WITHIN THE SHADED AREA ON THE ANNEXED DRAWING.
Claim 2
Dependent Claim
82 words
A WATER-SOLUBLE COPOLYMER OF ALLYL ALCOHOL, SULFUR DIOXIDE AND AT LEAST ONE ACID FROM THE GROUP CONSISTING OF ACRYLIC AND METHACRYLIC ACIDS, THE AMOUNT OF ALLYL ALCOHOL BEING FROM 16 TO 40 PERCENT, THAT OF SULFUR DIOXIDE BEING FROM 1 TO 43 PERCENT, AND THAT OF THE ACID BEING FROM 20 TO 60 PERCENT OF THE POLYMER WEIGHT, THE RELATIVE AMOUNTS OF EACH CONSTITUENT BEING CHOSEN SO AS TO BE REPRESENTED BY ANY POINT WITHIN THE SHADED AREA ON THE ANNEXED DRAWING.
References Cited (Backward Citations)
US2114292A
Cited
US2556799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |