US3329486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and device for testing for chloride, bromide, iodide, cyanide, and thiocyanate
Assignee: Bayer Corp
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Filing: 1965-09-10
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Granted: 1967-07-04
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Expires: 1985-09-10
Abstract
No abstract record available.
Inventors
- 👤 Rupe Chauncey Orvis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:07
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/84; G01N33/52; Y; Y10; Y10T; Y10T436/00; Y10T436/17; Y10T436/172307; Y10T436/18; Y10T436/182; Y10T436/19; Y10T436/193333
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A TEST DEVICE FOR THE DETECTION OF CHLORIDE, IODIDE, CYANIDE AND THIOCYANATE IONS IN AQUEOUS SOLUTION WHICH COMPRISES A BIBULOUS CARRIER INCORPORATED WITH A COMPOSITION COMPRISING: A BUFFER EFFECTIVE TO MAINTAIN THE PH OF THE COMPOSITION WITHIN A RANGE OF ABOUT 2.0 TO 8.0; A DIVALENT COPPER SALT, PRESENT IN THE COMPOSITION IN A MOLAR RATIO TO THE BUFFER OF ABOUT FROM 10:1 TO 1:1; AND, A CHROMOGENICALLY RESPONSIVE AMOUNT OF A PARA-DIAMINODIPHENYL COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
77 words
A TEST DEVICE FOR THE DETECTION OF CHLORIDE, IODIDE, CYANIDE AND THIOCYANATE IONS IN AQUEOUS SOLUTION WHICH COMPRISES A BIBULOUS CARRIER INCORPORATED WITH A COMPOSITION COMPRISING: A BUFFER EFFECTIVE TO MAINTAIN THE PH OF THE COMPOSITION WITHIN A RANGE OF ABOUT 2.0 TO 8.0; A DIVALENT COPPER SALT, PRESENT IN THE COMPOSITION IN A MOLAR RATIO TO THE BUFFER OF ABOUT FROM 10:1 TO 1:1; AND, A CHROMOGENICALLY RESPONSIVE AMOUNT OF A PARA-DIAMINODIPHENYL COMPOUND HAVING THE FORMULA
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |