Patent US2251648A successfully refreshed from Google Patents.
Patent US3305512A successfully refreshed from Google Patents.
US3305512A
Expired / Lapsed
US
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Pressure-sprayable water-soluble alkyl acrylate polymer solutions
Assignee: Johnson and Johnson
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Filing: 1964-04-09
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Granted: 1967-02-21
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Expires: 1984-04-09
Abstract
No abstract record available.
Inventors
- 👤 Robert J Gander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:11
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/30; A; A61; A61K; A61K9/00; A61K9/70; A61K9/7015; A61L; A61L26/00; A61L26/0009; A61L26/0014; A61L26/0061; A61L26/0076; C08; C08F; C08F8/00; C08F8/34; C09D; C09D133/00; C09D133/04; C09D133/06; Y; Y10; Y10S; Y10S524/00; Y10S524/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN A PRESSURIZED SYSTEM FOR SPRAY APPLICATION A SOLUTION OF A FILM-FORMING POLYMER IN PROPELLENT THE SOLVENT FOR SAID POLYMER IN SAID SYSTEM CONSISTING ESSENTIALLY OF A PROPELLENT USED IN SAID SYSTEM THE PROPELLENT OF SAID SYSTEM INCLUDING AT LEAST ONE PROPELLENT SOLVENT OF THE GROUP CONSISTING OF TRICHLOROFLUOROMETHANE, DIFLUOROCHLOROMETHANE, VINYL CHLORIDE AND DIMETHYL ETHER, SAID FILM-FORMING POLYMER BEING A POLYMER OF AN ALKYL ACRYLATE AND DIMETHYLDAMINOETHYL METHACRYLATE SAID ALKYL ACRYLATE HAVING AN ALKYL GROUP OF AT LEAST FOUR CARBONS AND BEING PRESENT IN SAID POLYMER IN AN AMOUNT OF AT LEAST 50 PERCENT BY WEIGHT, SAID POLYMER IN THE FREE BASE POLYMER FORM HAVING AN INTRINSIC VISCOSITY OF NOT OVER 1.6 AND PRESENT IN SAID SOLUTION IN A CONCENTRATION OF NOT OVER 6.0 PERCENT BY WEIGHT, SAID POLYMER CONTAINING ABOUT 1.0 TO 2.0 PERCENT BY WEIGHT OF THE RADICAL
Claim 2
Dependent Claim
140 words
IN A PRESSURIZED SYSTEM FOR SPRAY APPLICATION A SOLUTION OF A FILM-FORMING POLYMER IN PROPELLENT THE SOLVENT FOR SAID POLYMER IN SAID SYSTEM CONSISTING ESSENTIALLY OF A PROPELLENT USED IN SAID SYSTEM THE PROPELLENT OF SAID SYSTEM INCLUDING AT LEAST ONE PROPELLENT SOLVENT OF THE GROUP CONSISTING OF TRICHLOROFLUOROMETHANE, DIFLUOROCHLOROMETHANE, VINYL CHLORIDE AND DIMETHYL ETHER, SAID FILM-FORMING POLYMER BEING A POLYMER OF AN ALKYL ACRYLATE AND DIMETHYLDAMINOETHYL METHACRYLATE SAID ALKYL ACRYLATE HAVING AN ALKYL GROUP OF AT LEAST FOUR CARBONS AND BEING PRESENT IN SAID POLYMER IN AN AMOUNT OF AT LEAST 50 PERCENT BY WEIGHT, SAID POLYMER IN THE FREE BASE POLYMER FORM HAVING AN INTRINSIC VISCOSITY OF NOT OVER 1.6 AND PRESENT IN SAID SOLUTION IN A CONCENTRATION OF NOT OVER 6.0 PERCENT BY WEIGHT, SAID POLYMER CONTAINING ABOUT 1.0 TO 2.0 PERCENT BY WEIGHT OF THE RADICAL
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |