Patent US1760891A successfully refreshed from Google Patents.
Patent US3039174A successfully refreshed from Google Patents.
US3039174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elongated composite structure
Assignee: EIDP Inc
•
Filing: 1958-05-12
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Granted: 1962-06-19
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Expires: 1978-05-12
Abstract
No abstract record available.
Inventors
- 👤 Radow Norman
- 👤 Roseveare William Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:12
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/14; Y; Y10; Y10S; Y10S264/00; Y10S264/26; Y10S425/00; Y10S425/217; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2931; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
AN ELONGATED FLEXIBLE SHAPED COMPOSITE STRUCTURE COMPRISED OF AT LEAST TWO ADJOINING LAYERS OF DISSIMILAR POLYMERS SELECTED FROM THE GROUP CONSISTING OF SYNTHETIC CONDENSATION AND ADDITION POLYMERS WHICH IS ADMIXTURE YIELD CLOUDY FILMS, SAID LAYERS HAVING ADJACENT SURFACES IN INTIMATAE ADHERING CONTACT WITH EACH OTHER, ONE OF SAID DISSIMILAR POLYMERS HAVING AT LEAST 50 EQUIVALENTS OF AN ACID GROUP PER 10L GRAMS OF POLYMER, AND THE OTHER OF SAID DISSIMILAR POLYMERS HAVING AT LEAST 60 EQUIVALENTS OF A BASIC GROUP PER 106 GRAMS OF POLYMER, SAID ACID AND BASIC GROUPS BEING CHEMICALLY BONDED TO THE POLYMER CHAINS OF SAID POLYMERS.
Claim 2
Dependent Claim
100 words
AN ELONGATED FLEXIBLE SHAPED COMPOSITE STRUCTURE COMPRISED OF AT LEAST TWO ADJOINING LAYERS OF DISSIMILAR POLYMERS SELECTED FROM THE GROUP CONSISTING OF SYNTHETIC CONDENSATION AND ADDITION POLYMERS WHICH IS ADMIXTURE YIELD CLOUDY FILMS, SAID LAYERS HAVING ADJACENT SURFACES IN INTIMATAE ADHERING CONTACT WITH EACH OTHER, ONE OF SAID DISSIMILAR POLYMERS HAVING AT LEAST 50 EQUIVALENTS OF AN ACID GROUP PER 10L GRAMS OF POLYMER, AND THE OTHER OF SAID DISSIMILAR POLYMERS HAVING AT LEAST 60 EQUIVALENTS OF A BASIC GROUP PER 106 GRAMS OF POLYMER, SAID ACID AND BASIC GROUPS BEING CHEMICALLY BONDED TO THE POLYMER CHAINS OF SAID POLYMERS.
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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) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |