Patent US3256135A successfully refreshed from Google Patents.
US3256135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy adhesive
Assignee: Hexion Inc
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Filing: 1962-06-22
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Granted: 1966-06-14
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Expires: 1982-06-22
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Weinheimer
- 👤 Elizabeth A Blommers
- 👤 Loshaek Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:25
CPC Classifications
C; C09; C09J; C09J163/00; B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B27/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31518; Y10T428/31522; Y10T428/31942; Y10T428/31946
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A LAMINATE STRUCTURE COMPRISING: (1) SURFACES SELECTED FROM THE GROUP CONSISTING OF METAL, GLASS, PHENOLIC RESINS, AND MELAMINE RESINS, AND (2) AN ADHESIVE COMPOSITION DISPOSED AS A BONDING LAYER BETWEEN OVERLAPPING PARTS OF SAID SURFACES COMPRISING IN COMBINATION: (A) AN EPOXY RESIN HAVING AT LEAST TWO GLYCIDLY ETHER GROUPS FOR EACH MOLE OF THE RESIN; (B) A CURING AGENT THEREFOR; (C) A POLYVALENT METAL CHROMATE DISPERSED IN THE RESIN AND IN PART AT LEAST DISSOLVED THEREIN, THE SAID CHROMATE BEING INSOLUBLE IN WATER; (D) THE PROPORTIONS BEING 2-40 PARTS OF THE METAL CHROMATE FOR 100 PARTS OF THE RESIN; AND (E) SAID ADHESIVE BEING INCURED CONDITION AND REMAINING EFFECTIVE AS A BONDING MEDIUM AFTER EXPOSED TO SALT WATER.
Claim 2
Dependent Claim
118 words
A LAMINATE STRUCTURE COMPRISING: (1) SURFACES SELECTED FROM THE GROUP CONSISTING OF METAL, GLASS, PHENOLIC RESINS, AND MELAMINE RESINS, AND (2) AN ADHESIVE COMPOSITION DISPOSED AS A BONDING LAYER BETWEEN OVERLAPPING PARTS OF SAID SURFACES COMPRISING IN COMBINATION: (A) AN EPOXY RESIN HAVING AT LEAST TWO GLYCIDLY ETHER GROUPS FOR EACH MOLE OF THE RESIN; (B) A CURING AGENT THEREFOR; (C) A POLYVALENT METAL CHROMATE DISPERSED IN THE RESIN AND IN PART AT LEAST DISSOLVED THEREIN, THE SAID CHROMATE BEING INSOLUBLE IN WATER; (D) THE PROPORTIONS BEING 2-40 PARTS OF THE METAL CHROMATE FOR 100 PARTS OF THE RESIN; AND (E) SAID ADHESIVE BEING INCURED CONDITION AND REMAINING EFFECTIVE AS A BONDING MEDIUM AFTER EXPOSED TO SALT WATER.
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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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |