US3630939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions and methods for the production of chemiluminescent cold light
Assignee: HAROLD W SCHNEIDER
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Filing: 1969-01-14
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Granted: 1971-12-28
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Expires: 1989-01-14
Abstract
Abstract CHEMILUMINESCENT COLD LIGHT OF SELECTED COLOR TO CONTINUE FOR UP TO SIX DAYS DURATION IS PRODUCED BY THE INTIMATE MIXTURE OF A LUMINOL-DIMETHYLSULFOXIDE MIXTURE, WITH A LESS THAN 20% BY VOLUME WATER SOLUTION OF DIMETHYLSULFOXIDE SATURATED WITH A HYDROXIDE, WITH THE MIXTURE AND SOLUTION INITIALLY MAINTAINED IN THE PRESENCE OF AIR. THE ADDITION OF FLUORESCEIN MAY BE MADE TO CHANGE THE COLOR OF THE LIGHT. METHODS OF PRODUCING THE CHEMILUMINESCENT COLD LIGHT ARE ALSO DESCRIBED.
Inventors
- 👤 Harold W Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:00
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/06; C09K11/07
Claims Analysis
Total Claims: 0
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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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |