US4575433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of generating chemiluminescent light
Assignee: Iowa State University Research Foundation Inc
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Filing: 1985-01-03
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Granted: 1986-03-11
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Expires: 2005-01-03
Abstract
Abstract A method of chemiluminescently determining a sulfide which is either hydrogen sulfide or methyl mercaptan by reacting the sulfide with chlorine dioxide at low pressure and under conditions which allow a longer reaction time in emission of a single photon for every two sulfide containing species, and thereafter, chemiluminescently detecting and determining the sulfide. The invention also relates not only to the detection method, but the novel chemical reaction that generates chemiluminescent light and a specifically designed chemiluminescence detection cell for the reaction.
Inventors
- 👤 Stanford R. Spurlin
- 👤 Edward S. Yeung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:31
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/75; G01N21/76; G01N21/766; Y; Y10; Y10T; Y10T436/00; Y10T436/18; Y10T436/182; Y10T436/184
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
52 words
A method of generating chemiluminescent light comprising, reacting a gaseous sulfide containing compound selected from the group consisting of hydrogen sulfide and methyl mercaptan with gaseous chlorine dioxide, at a pressure of 40 torr, or lower to provide a single photon of chemiluminescent light for every two molecules of sulfide containing compound.
Claim 2
Independent Claim
52 words
A method of generating chemiluminescent light comprising, reacting a gaseous sulfide containing compound selected from the group consisting of hydrogen sulfide and methyl mercaptan with gaseous chlorine dioxide, at a pressure of 40 torr, or lower to provide a single photon of chemiluminescent light for every two molecules of sulfide containing compound.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein the sulfide containing compound is hydrogen sulfide.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein the sulfide containing compound is methyl mercaptan.
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) | 1989-03-10 | 1989-09-09 | 1990-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-10 | 1993-09-09 | 1994-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-10 | 1997-09-09 | 1998-03-11 | $7700.00 | Window Closed / Lapsed |