Patent US5064679A successfully refreshed from Google Patents.
US5064679A
Expired / Lapsed
US
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Plasma treatment method
Assignee: Toyoda Gosei Co Ltd
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Filing: 1990-08-27
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Granted: 1991-11-12
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Expires: 2010-08-27
Abstract
Abstract Method and apparatus for improving the surface quality of a resin molding by treating it with a plasma gas, measuring and integrating ion density and stopping the treatment when the integration reaches a predetermined value.
Inventors
- 👤 Toshiyasu Ito
- 👤 Toshikazu Funahashi
- 👤 Yasuhiko Ogisu
- 👤 Shigeyuki Takahashi
- 👤 Masanobu Senda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:00
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/14; B29C37/00; B29C2037/90; B29C2037/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A method of treating a resin molding to improve its surface quality, comprising the steps of: treating said resin molding by applying thereto a plasma gas while the resin molding is disposed in a treatment chamber, measuring ion density in said chamber, integrating said density, and stopping said treating when the integration reaches a predetermined value.
Claim 2
Independent Claim
56 words
A method of treating a resin molding to improve its surface quality, comprising the steps of: treating said resin molding by applying thereto a plasma gas while the resin molding is disposed in a treatment chamber, measuring ion density in said chamber, integrating said density, and stopping said treating when the integration reaches a predetermined value.
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) | 1994-11-11 | 1995-05-13 | 1995-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-11 | 1999-05-13 | 1999-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-11 | 2003-05-13 | 2003-11-12 | $7700.00 | Window Closed / Lapsed |