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US3769264A Expired / Lapsed US ⏱️ 0.0 years remaining

Film forming condensation polymers

Assignee: Eastman Kodak Co
•
Filing: 1971-11-01
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Granted: 1973-10-30
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Expires: 1991-11-01
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Abstract

Abstract A COMPOSITION OF MATTER COMPRISING A POLYMER HAVING THE STRUCTURE (X-A-X-(NH)J-R9-(NH)J)N (X1-R8-X1-(NH)J-R10-(NH)J)M WHEREIN: A IS (1-R1,1-R2,3-R3,3-((-)R4,R5-PHENYLENE),R6,R7-HEXAHYDRO- INDANYL)- N IS A MOLE FRACTION AND IS A POSITIVE NUMBER LESS THAN OR EQUAL TO 1; M IS A MOLE FRACTION AND EQUALS 1-N; R1 AND R3 ARE INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND ALKYL RADICALS OF FROM ONE TO SIX CARBON ATOMS; R2 IS AN ALKYL RADICAL OF FROM ONE TO SIX CARBON ATOMS; R4, R5, R6 AND R7 ARE INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ARYL RADICALS, HALOGEN ATOMS, NITRO RADICALS, CYANO RADICALS, AMINO RADICALS AND ALKOXY RADICALS; R8, R9 AND R10 ARE INDEPENDENTLY SELECTED ALIPHATIC OR AROMATIC RADICALS; J IS AN INTEGER EQUAL TO ZERO OR ONE; AND-X-A-X-AND-X1-R8-X1-AND J ARE INTERDEPENDENTLY RELATED ACCORDING TO THE FOLLOWING SCHEDULE: -X-A-X-, -X1-R8-X1-, J -OOC-A-COO-, -OOC-R8-COO-, 0 -COO-CH2-A-CH2-OOC-, -COO-R8-OOC-, 0 OR 1

Inventors

  • 👤 J Wilson
  • 👤 F Hamb

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 05:55
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/795; G03C1/7954; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3203; C08G18/3212; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/199; C08G71/00; C08G71/04

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) 1976-10-29 1977-04-30 1977-10-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-10-29 1981-04-30 1981-10-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-10-29 1985-04-30 1985-10-30 $7700.00 Window Closed / Lapsed

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