Patent US2908659A successfully refreshed from Google Patents.
US2908659A
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Solution of a synthetic cross-linked polymer in a swelling liquid, process of using,and products obtained therefrom
Assignee: EIDP Inc
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Filing: 1953-08-06
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Granted: 1959-10-13
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Expires: 1973-08-06
Abstract
No abstract record available.
Inventors
- 👤 Victor E Shashoua
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:02
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; D; D01; D01F; D01F1/00; D01F1/02; D01F1/10; Y; Y10; Y10S; Y10S8/00; Y10S8/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A COMPOSITION OF MATTER COMPRISING A SOLUTION OF A SATURATED, LINEAR POLYMER AND A SWOLLEN PARTICLE OF A UNIMOLECULAR, SYNTHETIC, ORGANIC, CROSS-LINKED POLYMER IN AN EXTENDING AND SWELLING LIQUID THEREFOR, THE SAID SWOLLEN PARTICLE IN ITS UNSWOLLEN FORM HAVING AN AVERAGE DIAMETER OF AT LEAST ABOUT 0.01 MICRON AN NO GREATER THAN ABOUT 3 MICRONS AND THE CONCENTRATION OF THE SAID SWOLLEN PARTICLE IN THE SAID EXTENDING AND SWELLING LIQUID BEING NO GREATER THAN THE CONCENTRATION AT WHICH ABRUPT INCREASE IN VISCOSITY IS EXPERIENCED AS THE CONCENTRATION OF THE SAID SWOLLEN PARTICLE IN THE SAID EXTENDING AND SWELLING LIQUID IS INCREASED.
Claim 2
Dependent Claim
101 words
A COMPOSITION OF MATTER COMPRISING A SOLUTION OF A SATURATED, LINEAR POLYMER AND A SWOLLEN PARTICLE OF A UNIMOLECULAR, SYNTHETIC, ORGANIC, CROSS-LINKED POLYMER IN AN EXTENDING AND SWELLING LIQUID THEREFOR, THE SAID SWOLLEN PARTICLE IN ITS UNSWOLLEN FORM HAVING AN AVERAGE DIAMETER OF AT LEAST ABOUT 0.01 MICRON AN NO GREATER THAN ABOUT 3 MICRONS AND THE CONCENTRATION OF THE SAID SWOLLEN PARTICLE IN THE SAID EXTENDING AND SWELLING LIQUID BEING NO GREATER THAN THE CONCENTRATION AT WHICH ABRUPT INCREASE IN VISCOSITY IS EXPERIENCED AS THE CONCENTRATION OF THE SAID SWOLLEN PARTICLE IN THE SAID EXTENDING AND SWELLING LIQUID IS INCREASED.
References Cited (Backward Citations)
CA493563A
Cited
GB675278A
Cited
US2636851A
Cited
US2616877A
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US2688008A
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US2687393A
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US2652378A
Cited
US2691641A
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US2696478A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |