Patent US2248870A successfully refreshed from Google Patents.
US2789063A
Expired / Lapsed
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Method of activating the surface of perfluorocarbon polymers and resultant article
Assignee: 3M Co
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Filing: 1954-03-26
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Granted: 1957-04-16
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Expires: 1974-03-26
Abstract
No abstract record available.
Inventors
- 👤 Robert J Purvis
- 👤 Warren R Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:43
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J2327/00; C08J2327/02; C08J2327/12; C08J2327/18; Y; Y10; Y10S; Y10S8/00; Y10S8/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A METHOD OF ACTIVATING A PASSIVE PERFLUOROCARBON POLYMER SURFACE OF AN ARTICLE WHICH COMPRISES BRIEFLY CONTACTING THE SURFACE WITH A METAL REACTIVE THEREWITH AND SELECTED FROM THE CLASS CONSISTING OF THE ALKALI METALS, THE ALKALINE EARTH METALS, MANGANESE AND ZINC AT A TEMPERATURE SUFFICIENT TO CAUSE REACTION BETWEEN THE METAL AND THE POLYMER, THE REACTIN BEING CONFINED TO THE SURFACE AND RENDERING IT ACTIVE TOWARD ORGANIC ADHESIVE COATINGS WITHOUT DEGRADING THE BULK OF THE POLYMER.
Claim 2
Independent Claim
75 words
A METHOD OF ACTIVATING A PASSIVE PERFLUOROCARBON POLYMER SURFACE OF AN ARTICLE WHICH COMPRISES BRIEFLY CONTACTING THE SURFACE WITH A METAL REACTIVE THEREWITH AND SELECTED FROM THE CLASS CONSISTING OF THE ALKALI METALS, THE ALKALINE EARTH METALS, MANGANESE AND ZINC AT A TEMPERATURE SUFFICIENT TO CAUSE REACTION BETWEEN THE METAL AND THE POLYMER, THE REACTIN BEING CONFINED TO THE SURFACE AND RENDERING IT ACTIVE TOWARD ORGANIC ADHESIVE COATINGS WITHOUT DEGRADING THE BULK OF THE POLYMER.
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) | 1960-04-15 | 1960-10-15 | 1961-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-15 | 1964-10-15 | 1965-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-15 | 1968-10-15 | 1969-04-16 | $7700.00 | Window Closed / Lapsed |