US4445991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enhanced wettability of organic surfaces
Assignee: Mobil Oil AS
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Filing: 1982-11-10
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Granted: 1984-05-01
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Expires: 2002-11-10
Abstract
Abstract This invention provides a method for enhancing wettability of an organic surface which is at least comparatively hydrophobic which comprises subjecting said surface to plasma surface treatment using a gaseous medium selected from the group consisting of oxygen, argon, nitrous oxide, air and mixtures thereof.
Inventors
- 👤 Harold A. Arbit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:06
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/123
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
92 words
A method for enhancing the wettability of an organic surface which is at least comparatively hydrophobic comprising subjecting said surface to a plasma surface treatment using a gaseous medium selected from the group consisting of oxygen, argon, nitrous oxide, air and mixtures thereof said plasma treatment including converting said gaseous medium into ionized gas composed of electrons and positive ions in such relative numbers that the gaseous medium is essentially neutral, at a temperature between ambient or standard room temperature and below the decomposition temperature or softening temperature of said organic surface.
Claim 2
Independent Claim
92 words
A method for enhancing the wettability of an organic surface which is at least comparatively hydrophobic comprising subjecting said surface to a plasma surface treatment using a gaseous medium selected from the group consisting of oxygen, argon, nitrous oxide, air and mixtures thereof said plasma treatment including converting said gaseous medium into ionized gas composed of electrons and positive ions in such relative numbers that the gaseous medium is essentially neutral, at a temperature between ambient or standard room temperature and below the decomposition temperature or softening temperature of said organic surface.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein said surface is a polymer surface.
Claim 4
Dependent Claim
25 words
The method of claim 2 wherein said polymer surface is a member selected from the group consisting of a polyolefin, polyethylene terephthalate and polyacrylonitrile homopolymer.
Claim 5
Dependent Claim
11 words
The method of claim 3 wherein said polyolefin is oriented polypropylene.
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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) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |