Patent US4909995A successfully refreshed from Google Patents.
US4909995A
Expired / Lapsed
US
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Process and apparatus for dry sterilization of medical devices and materials
Assignee: Individual
•
Filing: 1988-11-22
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Granted: 1990-03-20
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Expires: 2008-11-22
Abstract
Abstract A process for dry sterilization of medical devices and materials in which these materials are subjected to an electrical discharge in a gaseous atmosphere to produce an active plasma for surface sterilization of the devices and materials.
Inventors
- 👤 Adir Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:37
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/02; A61L2/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
Apparatus for sterilization of medical devices and materials with a gas plasma comprising, a gas-confining chamber having a generally cylindrical metal wall, said chamber wall being connected to a point of potential reference, an internal planar electrode positioned within said chamber, a perforated metallic enclosure insulated from, and containing said planar electrode, said perforated metallic enclosure being connected to said point of potential reference, means for applying an RF voltage between said planar electrode and said point of potential reference, means for evacuating said chamber, and means for flowing gas through said chamber.
Claim 2
Dependent Claim
93 words
Apparatus for sterilization of medical devices and materials with a gas plasma comprising, a gas-confining chamber having a generally cylindrical metal wall, said chamber wall being connected to a point of potential reference, an internal planar electrode positioned within said chamber, a perforated metallic enclosure insulated from, and containing said planar electrode, said perforated metallic enclosure being connected to said point of potential reference, means for applying an RF voltage between said planar electrode and said point of potential reference, means for evacuating said chamber, and means for flowing gas through said chamber.
Claim 3
Dependent Claim
108 words
Apparatus for sterilization of medical devices and materials with a gas plasma comprising, a gas-confining chamber having a generally cylindrical metal wall, said chamber wall being connected to a point of potential reference, an internal planar electrode positioned within said chamber, a perforated metallic enclosure insulated from, and containing said planar electrode, and means for applying an RF voltage of one frequency between the planar electrode and said point of point of potential reference, and for applying an RF voltage of a different frequency between said perforated metallic enclosure and said point of potential reference, means for evacuating said chamber and, means for flowing gas through said chamber.
Claim 4
Dependent Claim
108 words
Apparatus for sterilization of medical devices and materials with a gas plasma comprising, a gas-confining chamber having a generally cylindrical metal wall, said chamber wall being connected to a point of potential reference, an internal planar electrode positioned within said chamber, a perforated metallic enclosure insulated from, and containing said planar electrode, and means for applying an RF voltage of one frequency between the planar electrode and said point of point of potential reference, and for applying an RF voltage of a different frequency between said perforated metallic enclosure and said point of potential reference, means for evacuating said chamber and, means for flowing gas through said chamber.
References Cited (Backward Citations)
US3383163A
Cited
US3671195A
Cited
US3616461A
Cited
US3619403A
Cited
US3816196A
Cited
US3875068A
Cited
US4362632A
Cited
US4285800A
Cited
US4304983A
Cited
US4443409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-19 | 1993-09-18 | 1994-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-19 | 1997-09-18 | 1998-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-19 | 2001-09-18 | 2002-03-20 | $7700.00 | Window Closed / Lapsed |