Patent US3627469A successfully refreshed from Google Patents.
US3627469A
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Exposure and sterilization indicators comprising substituted pyridines quinolines and/or isoquinolines
Assignee: All Steel Equipment Inc
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Filing: 1970-04-27
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Granted: 1971-12-14
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Expires: 1990-04-27
Abstract
Abstract EXPOSURE AND STERILIZATION INDICATORS SUITABLE FOR USE IN MONITORING A STERILIZATION PROCESS EMPLOYING DRY HEAT OR AN ALKYLATING AGENT, SUCH AS ETHYLENE OXIDE, AS THE STERILIZATION AGENT ARE DISCLOSED. THE INDICATORS, WHICH FUNCTION BY MEANS OF CHANGE IN COLOR, COMPRISE CARRIER MEMBERS BEARING SELECTED SUBSTITUTED PYRIDINES, QUINOLINES, AND/OR ISOQUINOLINES.
Inventors
- 👤 Shu-Sing Cheng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:38
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; G01N31/226; A; A61; A61L; A61L2/00; A61L2/26; A61L2/28; Y; Y10; Y10T; Y10T436/00; Y10T436/14; Y10T436/142222
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |