US3841937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of plastic-metal products including laminates,composite tubes and the like
Assignee: RW ERWIN
•
Filing: 1972-12-01
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Granted: 1974-10-15
•
Expires: 1992-12-01
Abstract
Abstract 1. THE METHOD OF ADHERING A PREFORMED CONTINUOUS PLIABLE FILM OF POLYMERIC FLUOROCARBON PLASTIC MATERIAL TO A METAL SURFACE WHICH COMPRISES HEATING A LAYER OF THE PLASTIC MATERIAL, SUPERPOSED UPON A METAL SURFACE LAMINA IN AN ENVIRONMENT OF REDUCED ATMOSPHERIC PRESSURE, SUFFICIENTLY TO SOFTEN THE PLASTIC FILM AND BOND THE SAME TO THE METAL SURFACE WITHOUT APPLICATION OF COMPRESSIVE PRESSURE TO THE OUTER SURFACE OF THE PLASTIC FILM, TO FORM A BONDED METAL-PLASTIC LAMINATE WITHOUT ENTRAPMENT OF AIR.
Inventors
- 👤 R Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:39
CPC Classifications
B; B29; B29C; B29C63/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
THE METHOD OF ADHERING A PREFORMED CONTINUOUS PLIABLE FILM OF POLYMERIC FLUOROCARBON PLASTIC MATERIAL TO A METAL SURFACE WHICH COMPRISES HEATING A LAYER OF THE PLASTIC MATERIAL, SUPERPOSED UPON A METAL SURFACE LAMINA IN AN ENVIRONMENT OF REDUCED ATMOSPHERIC PRESSURE, SUFFICIENTLY TO SOFTEN THE PLASTIC FILM AND BOND THE
Claim 2
Independent Claim
49 words
THE METHOD OF ADHERING A PREFORMED CONTINUOUS PLIABLE FILM OF POLYMERIC FLUOROCARBON PLASTIC MATERIAL TO A METAL SURFACE WHICH COMPRISES HEATING A LAYER OF THE PLASTIC MATERIAL, SUPERPOSED UPON A METAL SURFACE LAMINA IN AN ENVIRONMENT OF REDUCED ATMOSPHERIC PRESSURE, SUFFICIENTLY TO SOFTEN THE PLASTIC FILM AND BOND THE
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |