US3585004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test composition and device for detecting couplable compounds
Assignee: Bayer Corp
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Filing: 1969-03-21
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Granted: 1971-06-15
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Expires: 1989-03-21
Abstract
Abstract A TEST COMPOSITION AND DEVICE WHICH UNDERGOES AN ENHANCED COLOR CHANGE WHEN CONTACTED BY A COUPLABLE COMPOUND. THE COMPOSITION COMPRISES A DIAZONIUM SALT AND A LEWIS ACID HALIDE OR A COMPLEX OF A LEWIS ACID HALIDE AND AN ORGANIC LEWIS BASE. THE DEVICE IS PREPARED BY INCORPORATING IN A CARRIER THE DIAZONIUM SALT SOLUTION AND THE LEWIS ACID HALIDE OR COMPLEX THEREOF WITH AN ORGANIC LEWIS BASE. THE COMPOSITION AND DEVICE ARE USED IN A PROCESS FOR DETECTING COUPLABLE COMPOUNDS.
Inventors
- 👤 Raymond L Mast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:40
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/52; Y; Y10; Y10S; Y10S436/00; Y10S436/903; Y10T; Y10T436/00; Y10T436/14; Y10T436/145555; Y10T436/146666
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |