US3306791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding of epoxy resins to polyolefin plastic materials
Assignee: Gulton Industries Inc
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Filing: 1962-10-08
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Granted: 1967-02-28
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Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 John D Nye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:08
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/10; B05D3/101; B05D2201/00; B05D2201/02; B05D2504/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A METHOD OF BONDING A POLYETHYLENE PLASTIC MATERIAL TO AN EPOXY RESIN, THE STEPS COMPRISING CONTACTING A POLYETHYLENE PLASTIC MATERIAL WITH AT LEAST A 95% SOLUTION OF SULFURIC ACID CONTAINING FROM AOBUT 0.05% TO ABOUT 2%, BY WEIGHT, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF CHROMIC ACID AND COMPOUNDS OF CHROMIUM CAPABLE OF FORMING CHROMIC ACID IN THE PRESENCE OF SULFURIC ACID, WASHING AND DRYING THE SAID TREATED POLYETHYLENE PLASTIC MATERIAL, AND THEN APPLYING AN EPOXY RESIN CONTAINING A CURING AGENT TO THE DRIED MATERIAL AND ALLOWING THE SAID RESIN TO CURE ON THE MATERIAL AT ROOM TEMPERATURE.
Claim 2
Dependent Claim
101 words
IN A METHOD OF BONDING A POLYETHYLENE PLASTIC MATERIAL TO AN EPOXY RESIN, THE STEPS COMPRISING CONTACTING A POLYETHYLENE PLASTIC MATERIAL WITH AT LEAST A 95% SOLUTION OF SULFURIC ACID CONTAINING FROM AOBUT 0.05% TO ABOUT 2%, BY WEIGHT, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF CHROMIC ACID AND COMPOUNDS OF CHROMIUM CAPABLE OF FORMING CHROMIC ACID IN THE PRESENCE OF SULFURIC ACID, WASHING AND DRYING THE SAID TREATED POLYETHYLENE PLASTIC MATERIAL, AND THEN APPLYING AN EPOXY RESIN CONTAINING A CURING AGENT TO THE DRIED MATERIAL AND ALLOWING THE SAID RESIN TO CURE ON THE MATERIAL AT ROOM TEMPERATURE.
References Cited (Backward Citations)
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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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |