US4642165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of vaporizing multicomponent liquids
Assignee: American Sterilizer Co
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Filing: 1984-12-21
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Granted: 1987-02-10
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Expires: 2004-12-21
Abstract
Abstract A method of vaporizing a multicomponent liquid, such as a hydrogen peroxide and water solution, for injection into a vacuum chamber including the steps of metering successive predetermined increments of the liquid at a predetermined rate onto a heated surface in a vaporization chamber. Upon exposure to the heated surface, each liquid increment is substantially instantaneously vaporized before the next succeeding liquid increment is metered onto the heated surface to produce a multicomponent vapor increment having substantially the same weight percent composition as the multicomponent liquid increment. Each vapor increment is passed into the vacuum chamber.
Inventors
- 👤 Mark E. Bier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:16
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/0082
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
84 words
A method of vaporizing a multicomponent liquid comprising: metering successive predetermined increments of said multicomponent liquid at a predetermined rate onto a heated surface of a vaporization chamber; substantially instantaneously vaporizing each said liquid increment on said heated surface before the succeeding said liquid increment is metered onto said heated surface so that each liquid increment vaporization produces a multicomponent vapor increment having substantially the same weight percent composition as said multicomponent liquid increment; and passing each said vapor increment into a vacuum chamber.
Claim 2
Independent Claim
84 words
A method of vaporizing a multicomponent liquid comprising: metering successive predetermined increments of said multicomponent liquid at a predetermined rate onto a heated surface of a vaporization chamber; substantially instantaneously vaporizing each said liquid increment on said heated surface before the succeeding said liquid increment is metered onto said heated surface so that each liquid increment vaporization produces a multicomponent vapor increment having substantially the same weight percent composition as said multicomponent liquid increment; and passing each said vapor increment into a vacuum chamber.
Claim 3
Dependent Claim
36 words
A method as recited in claim 1 further comprising heating said surface at a rate that replaces the heat lost to vaporizing each liquid increment before said next succeeding liquid increment is metered onto said surface.
Claim 4
Dependent Claim
21 words
A method as recited in claim 1 wherein said multicomponent liquid is a binary composition having components of significantly differing volatilities.
Claim 5
Dependent Claim
27 words
A method as recited in claim 3 wherein said binary composition is a hydrogen peroxide, water solution having a hydrogen peroxide concentration of about 20-50% by weight.
Claim 6
Independent Claim
114 words
A method of vaporizing a multicomponent liquid comprising: metering a predetermined amount of the multicomponent liquid into a vaporization chamber; heating said amount of liquid on a surface of said vaporization chamber to substantially instantaneously raise the least volatile component of said multicomponent liquid to its boiling point to produce a multicomponent vapor having substantially the same percent composition as said amount of said multicomponent liquid; passing said multicomponent vapor into a vacuum chamber; and repeating for a predetermined period of time said metering, heating, and passing steps at a predetermined rate no greater than that required to substantially completely vaporize one said amount of liquid before metering the next said amount of liquid.
Claim 7
Independent Claim
114 words
A method of vaporizing a multicomponent liquid comprising: metering a predetermined amount of the multicomponent liquid into a vaporization chamber; heating said amount of liquid on a surface of said vaporization chamber to substantially instantaneously raise the least volatile component of said multicomponent liquid to its boiling point to produce a multicomponent vapor having substantially the same percent composition as said amount of said multicomponent liquid; passing said multicomponent vapor into a vacuum chamber; and repeating for a predetermined period of time said metering, heating, and passing steps at a predetermined rate no greater than that required to substantially completely vaporize one said amount of liquid before metering the next said amount of liquid.
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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) | 1990-02-09 | 1990-08-11 | 1991-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-09 | 1994-08-11 | 1995-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-09 | 1998-08-11 | 1999-02-10 | $7700.00 | Window Closed / Lapsed |