Patent US3616963A successfully refreshed from Google Patents.
US3616963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide epoxy resin reaction product adhesive
Assignee: WR Grace and Co
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Filing: 1967-02-24
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Granted: 1971-11-02
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Expires: 1987-02-24
Abstract
Abstract This invention is directed to an adhesive consisting essentially of a transparent amorphous polyamide formed from terephthalic acid and an isomeric mixture of 2,2,4- and 2,4,4trimethylhexamethyenediamines in combination with an epoxy resin and laminates formed with such an adhesive.
Inventors
- 👤 Kenneth M Sinnott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:33
CPC Classifications
C; C09; C09J; C09J177/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
14 words
A laminate comprised of adherends bonded together with the adhesive composition of claim 1.
Claim 2
Dependent Claim
11 words
A laminate according to claim 2 wherein the adherends are metal.
Claim 3
Dependent Claim
17 words
A tubular metal can wherein the side seam is cemented with the adhesive composition of claim 1.
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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |