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US3772292A Expired / Lapsed US ⏱️ 0.0 years remaining

N-hydroxymethyl compounds,compositions containing such compounds and cellulose-containing textile materials treated therewith

Assignee: Eastman Kodak Co
•
Filing: 1970-12-30
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Granted: 1973-11-13
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Expires: 1990-12-30
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Abstract

Abstract COMPOUNDS HAVING THE FORMULA 2,8-DI(O=),1,3,7,8-TETRA(R-),4,5-DI(R1-),4A-R2-PERHYDRO- PYRIMIDO(4,5-D)PYRIMIDINE WHEREIN EACH R IS HYDROGEN, ALKYL OR HYDROXYMETHYL, AT LEAST TWO R GROUPS BEING HYDROXYMETHYL, R1 IS ALKYL, AND R2 IS HYDROGEN OR ALKYL; COMPOSITIONS CONTAINING THE DESCRIBED COMPOUNDS AND/OR N-HYDROXYMETHYL DERIVATIVES OF OTHER COMPOUNDS OBTAINED, IN ADDITION TO THE DESCRIBED COMPOUNDS, BY CONDENSING AN ALIPHATIC ALDEHYDE WITH A UREA COMPOUND; AND CELLULOSE-CONTAINING TEXTILE MATERIALS TREATED WITH THE COMPOUNDS OR COMPOSITIONS. THE COMPOUNDS AND COMPOSITIONS IMPART WRINKLE-RESISTANT PROPERTIES TO CELLULOSE-CONTAINING CELLULOSE TEXTILE MATERIALS, SUCH TREATED MATERIALS EXHIBITING EXCELLENT TENSILE STRENGTH AND RESISTANCE TO ABRASION.

Inventors

  • 👤 J Martin
  • 👤 R Meen
  • 👤 H Lewis

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 21:24
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423

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) 1976-11-12 1977-05-14 1977-11-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-11-12 1981-05-14 1981-11-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-11-12 1985-05-14 1985-11-13 $7700.00 Window Closed / Lapsed

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