Patent US2858281A successfully refreshed from Google Patents.
US2858281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insoluble, acid and alkali-resistant carboxylic polymers
Assignee: Goodrich Corp
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Filing: 1954-01-22
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Granted: 1958-10-28
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Expires: 1974-01-22
Abstract
No abstract record available.
Inventors
- 👤 Richard G Bauman
- 👤 Harold P Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:16
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08F22/00; C08F36/00; C08F36/02; C08F36/20; Y; Y10; Y10S; Y10S526/00; Y10S526/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
INSOLUBLE, ACID AND ALKALI-RESISTANC, CROSS-LINKED, CARBOXYL-CONTAINING RESINS HAVING A PLURALITY OF CARBOXYL GROUPS COMPRISING THE REACTION PRODUCTS OF (A) A MEMBER OF THE GROUP CONSISTING OF (1) ACYLIC ACID, (2) METHACRYLIC ACID, (3) AN EQUIMOLAR MIXTURE OF MALEIC ANHYDRIDE AND METHYL VINYL ETHER AND (4) AN EQUIMOLAR MIXTURE OF AMLEIC ACID AND METHYL VINYL ETHER AND (B) 0.1 TO 15% BY WEIGHT BASED ON THE TOTAL REACTING MATERIALS OF A HYDROCARBON SOLUBLE, ALKALI METAL-CATALYZED HOMOPOLYMER OF A BUTADIENE-1,3, SAID CARBOXYL-CONTAINING RESINS BEING SWELLABLE AND CAPABLE OF ABSORBING AT LEAST 11 TIMES THEIR WEIGHT OF WATER.
Claim 2
Dependent Claim
95 words
INSOLUBLE, ACID AND ALKALI-RESISTANC, CROSS-LINKED, CARBOXYL-CONTAINING RESINS HAVING A PLURALITY OF CARBOXYL GROUPS COMPRISING THE REACTION PRODUCTS OF (A) A MEMBER OF THE GROUP CONSISTING OF (1) ACYLIC ACID, (2) METHACRYLIC ACID, (3) AN EQUIMOLAR MIXTURE OF MALEIC ANHYDRIDE AND METHYL VINYL ETHER AND (4) AN EQUIMOLAR MIXTURE OF AMLEIC ACID AND METHYL VINYL ETHER AND (B) 0.1 TO 15% BY WEIGHT BASED ON THE TOTAL REACTING MATERIALS OF A HYDROCARBON SOLUBLE, ALKALI METAL-CATALYZED HOMOPOLYMER OF A BUTADIENE-1,3, SAID CARBOXYL-CONTAINING RESINS BEING SWELLABLE AND CAPABLE OF ABSORBING AT LEAST 11 TIMES THEIR WEIGHT OF WATER.
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) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |