Patent US2609320A successfully refreshed from Google Patents.
US3307966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped structures treated with polyepoxide and polyisocyanate for improving adherence to rubbers
Assignee: EIDP Inc
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Filing: 1963-10-29
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Granted: 1967-03-07
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Expires: 1983-10-29
Abstract
No abstract record available.
Inventors
- 👤 Shoaf Charles Jefferson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:54
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J2321/00; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A SHAPED STRUCTURE OF AN ORGANIC POLYMER BEARING FROM ABOUT 0.2 TO ABOUT 5% BY WEIGHT OF A COATING CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF (A) A POLYEPOXIDE HAVING AN AVERALGE OF AT LEAST TWO EPOXY GROUPS IN EACH MOLECULE, A MELTING POINT BELOW ABOUT 150*C., AN AVERAGE MOLECULAR WEIGHT BELOW ABOUT 3000 AND AN EPOXIDE EQUIVALENT BELOW ABOUT 2500 AND (B) AN AROMATIC POLYISOCYANATE FROM THE CLASS CONSISTING OF AR(NCO)N, (AR(NCO)N)M, AND AR(NHCOX)N WHEREIN AR IS AN ORGANIC RESIDUE CONTAINING AT LEAST ONE AROMATIC NUCLEUS, X IS RADICAL SELECTED FROM THE GROUP CONSISTING OF ARYLOXY, ARYLTHIO, IMINOXY AND LACTAM-N-YL, AND M AND N ARE WHOLE NUMBERS OF AT LEAST 2, THE WEIGHT RATIO OF (A)/(B) BEING WITHIN THE RANGE OF FROM ABOUT 0.01 TO ABOUT 5.0.
Claim 2
Dependent Claim
128 words
A SHAPED STRUCTURE OF AN ORGANIC POLYMER BEARING FROM ABOUT 0.2 TO ABOUT 5% BY WEIGHT OF A COATING CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF (A) A POLYEPOXIDE HAVING AN AVERALGE OF AT LEAST TWO EPOXY GROUPS IN EACH MOLECULE, A MELTING POINT BELOW ABOUT 150*C., AN AVERAGE MOLECULAR WEIGHT BELOW ABOUT 3000 AND AN EPOXIDE EQUIVALENT BELOW ABOUT 2500 AND (B) AN AROMATIC POLYISOCYANATE FROM THE CLASS CONSISTING OF AR(NCO)N, (AR(NCO)N)M, AND AR(NHCOX)N WHEREIN AR IS AN ORGANIC RESIDUE CONTAINING AT LEAST ONE AROMATIC NUCLEUS, X IS RADICAL SELECTED FROM THE GROUP CONSISTING OF ARYLOXY, ARYLTHIO, IMINOXY AND LACTAM-N-YL, AND M AND N ARE WHOLE NUMBERS OF AT LEAST 2, THE WEIGHT RATIO OF (A)/(B) BEING WITHIN THE RANGE OF FROM ABOUT 0.01 TO ABOUT 5.0.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |