Patent US3297664A successfully refreshed from Google Patents.
US3297664A
Expired / Lapsed
US
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Calcium salts of lightly cross-linked ethylenically unsaturated carboxylic acids anddiethylenically unsaturated aliphatics
Assignee: White Laboratories Inc
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Filing: 1962-08-06
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Granted: 1967-01-10
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Expires: 1982-08-06
Abstract
No abstract record available.
Inventors
- 👤 John J Miskel
- 👤 Schlesinger Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:22
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A61K31/74; A61K31/765; A61K31/78; A61K33/00; A61K33/06; A61K47/00; A61K47/50; A61K47/51; A61K47/56; A61K47/58; A61K47/585; C; C08; C08F; C08F22/00; C08F220/00; C08F220/02; C08F220/04; C08F220/06; C08F8/00; C08F8/44; Y; Y02; Y02A; Y02A50/00; Y02A50/30; Y10; Y10S; Y10S260/00; Y10S260/31; Y10S526/00; Y10S526/93; Y10S526/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A CROSS-LINKED SWELLABLE RESIN, SAID RESIN CONSISTING ESSENTIALLY OF A POLYMER OF AN ETHYLENICALLY UNSATURATED CARBOYXLIC ACID CROSS-LINKED WITH ABOUT 0.01 TO 2.0 PERCENT BY WEIGHT OF A CROSS-LINKING AGENT, WHEREIN THE MONOMER OF THE SAID CARBOXYLIC ACID IS OF THE TYPE CAPABLE OF BOTH HOMOPOLYMERIZATION AND COPOLYMERIZATION, AND WHEREIN THE CROSS-LINKING AGENT IS A DI-TERMINALLY ETHYLENICALLY UNSATURATED ALIPHATIC COMPOUND HAVING MORE THAN FIVE CARBONS IN THE CHAIN, AND WHEREIN THE CROSSLINKING AGENT IS SOLUBLE IN THE MONOMER OF THE SAID CARBOXYLIC ACID REACTED WITH A STOICHIOMETRIC QUANTITY OF CALCIUM ION.
Claim 2
Dependent Claim
91 words
A CROSS-LINKED SWELLABLE RESIN, SAID RESIN CONSISTING ESSENTIALLY OF A POLYMER OF AN ETHYLENICALLY UNSATURATED CARBOYXLIC ACID CROSS-LINKED WITH ABOUT 0.01 TO 2.0 PERCENT BY WEIGHT OF A CROSS-LINKING AGENT, WHEREIN THE MONOMER OF THE SAID CARBOXYLIC ACID IS OF THE TYPE CAPABLE OF BOTH HOMOPOLYMERIZATION AND COPOLYMERIZATION, AND WHEREIN THE CROSS-LINKING AGENT IS A DI-TERMINALLY ETHYLENICALLY UNSATURATED ALIPHATIC COMPOUND HAVING MORE THAN FIVE CARBONS IN THE CHAIN, AND WHEREIN THE CROSSLINKING AGENT IS SOLUBLE IN THE MONOMER OF THE SAID CARBOXYLIC ACID REACTED WITH A STOICHIOMETRIC QUANTITY OF CALCIUM ION.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |