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US3563931A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of making chromogen-bonded-polymer and products thereof

Assignee: Individual
•
Filing: 1965-08-06
•
Granted: 1971-02-16
•
Expires: 1985-08-06
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Abstract

Abstract A METHOD OF MAKING A CHROMOGEN-BONDED POLYMER WHICH COMPRISES THE STEPS OF DIAZOTIZING A CHROMOGENCONTAINING AMINO COMPOUND IN AQUEOUS MEDIUM CONTAINING HYDROCHLORIC ACID IN A QUANTITY WHICH EXCEEDS ITS THEORETICALLY REQUIRED MOLAR QUANTITY OF HYDROCHLORIC ACID BY AT LEAST 10 MOLS PER ONE AMINO RADICAL TO PRODUCE THE DIAZOTIZED PRODUCT OF THE CHROMOGEN; STABILIZING THE DIAZOTIZED PRODUCT WITH A STABILIZER TO PRODUCE THE STABILIZED DIAZONIUM OR DIAZO PRODUCT OF THE CHROMOGEN; MIXING THE RESULTING STABILIZED PRODUCT WITH AN ADDITION POLYMERIZABLE MONOMER; AND POLYMERIZING THE MONOMER USING THE STABILIZED DIAZONIUM OR DIAZO PRODUCT AS AN INITIATOR FOR THE POLYMERIZATION OF THE MONOMER TO FORM THE CHROMOGEN-BONDED-POLYMER.

Inventors

  • 👤 Shojiro Horiguchi
  • 👤 Michiei Nakamura

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 12:13
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/0056; D06P1/006; C; C08; C08F; C08F2/00; C08F2/44; C08F4/00; C09; C09B; C09B68/00; C09B68/20; C09B68/24; C09B69/00; C09B69/10; Y; Y10; Y10S; Y10S534/00; Y10S534/01

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) 1974-02-15 1974-08-17 1975-02-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-02-15 1978-08-17 1979-02-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-02-15 1982-08-17 1983-02-16 $7700.00 Window Closed / Lapsed

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