Patent US3189479A successfully refreshed from Google Patents.
US3189479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified resin foams and process of manufacture thereof
Assignee: Kimberly Clark Tissue Co
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Filing: 1961-10-04
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Granted: 1965-06-15
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Expires: 1981-10-04
Abstract
No abstract record available.
Inventors
- 👤 Coppick Sydney
- 👤 Ronald L Beal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:04
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/36; C08J2361/00; Y; Y10; Y10S; Y10S264/00; Y10S264/02; Y10S264/05; Y10S521/00; Y10S521/905; Y10S521/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A PROCESS OF IMPARTING HYDROPHILICITY TO A FOAMED, CURED AND HARDENED AMINOPLAST RESIN STRUCTURE WHICH COMPRISES CONTACTING THE SURFACES OF SAID FOAM STRUCTURE WITH AMMONIA.
Claim 2
Dependent Claim
25 words
A PROCESS OF IMPARTING HYDROPHILICITY TO A FOAMED, CURED AND HARDENED AMINOPLAST RESIN STRUCTURE WHICH COMPRISES CONTACTING THE SURFACES OF SAID FOAM STRUCTURE WITH AMMONIA.
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |