US3085077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous dispersion comprising a maleic anhydride divinyl ether copolymer
Assignee: Hercules Powder Co
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Filing: 1960-06-29
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Granted: 1963-04-09
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Expires: 1980-06-29
Abstract
No abstract record available.
Inventors
- 👤 John D Floyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:48
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08F; C08F22/00; C08F22/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A STABLE, FLUID, AQUEOUS DISPERSION OF INGREDIENTS INCLUDING A FINELY DIVIDED NONACIDIC SOLID THAT IS NOT PER SE DISPERSIBLE IN WATER AND A MINOR AMOUNT OF A DISPERSING AGENT CONSISTING ESSENTIALLY OF A WATER-SOLUBLE SALT OF A LINEAR COPOLYMER, SAID COPOLYMER CONSISTING OF DIVINYL ETHER AND MALEIC ANHYDRIDE IN A MOLE RATIO OF 1:2 AND HAVING AN AVERAGE MOLECULAR WEIGHT OF FROM ABOUT 500 TO ABOUT 40,000.
Claim 2
Dependent Claim
67 words
A STABLE, FLUID, AQUEOUS DISPERSION OF INGREDIENTS INCLUDING A FINELY DIVIDED NONACIDIC SOLID THAT IS NOT PER SE DISPERSIBLE IN WATER AND A MINOR AMOUNT OF A DISPERSING AGENT CONSISTING ESSENTIALLY OF A WATER-SOLUBLE SALT OF A LINEAR COPOLYMER, SAID COPOLYMER CONSISTING OF DIVINYL ETHER AND MALEIC ANHYDRIDE IN A MOLE RATIO OF 1:2 AND HAVING AN AVERAGE MOLECULAR WEIGHT OF FROM ABOUT 500 TO ABOUT 40,000.
References Cited (Backward Citations)
US2548318A
Cited
US2798053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |