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US3718432A Expired / Lapsed US ⏱️ 0.0 years remaining

Determination of ammonia and organic amino compounds

Assignee: Individual
•
Filing: 1971-02-12
•
Granted: 1973-02-27
•
Expires: 1991-02-12
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Abstract

Abstract R1-CO-AR-CO-R2 IN WHICH AR INDICATES AN AROMATIC RADICAL, THE -COR1 AND -COR2 GROUPS BEING ATTACHED TO ADJACENT CARBON ATOMS, AND R1 AND R2 ARE INDENTICAL OR DIFFERENT AND REPRESENT HYDROGEN OR AN ORGANIC RADICAL, AND WITH A REDUCING AGENT, OR WITH A REACTION PRODUCT OF THE SAID COMPOUND OF FORMULA I AND THE REDUCING AGENT. A PROCESS FOR THE DETERMINATION OF AMMONIA AND ORGANIC AMINO COMPOUNDS HAVING AT LEAST ONE PRIMARY AMINO GROUP, IN PARTICULAR AMINO ACIDS AND THEIR DERIVATIVES SUBSTITUTED ON THE CARBBOXYL GROUP, COMPRISING THE STEP OF CREATING A FLUORESCENT PRODUCT BY PUTTING INTO CONTACT THE COMPOUND TO BE DETERMINED EITHER WITH A COMPOUND OF THE FORMULA I: D R A W I N G

Inventors

  • 👤 M Roth

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 21:17
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/63; G01N21/64; G01N21/6428; G01N31/00; G01N31/22; G01N2021/6417; Y; Y10; Y10T; Y10T436/00; Y10T436/17; Y10T436/173845; Y10T436/175383

Claims Analysis

Total Claims: 0
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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) 1976-02-27 1976-08-28 1977-02-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-02-27 1980-08-28 1981-02-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-02-27 1984-08-28 1985-02-27 $7700.00 Window Closed / Lapsed

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