US3250745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylated bisphenol alkylene oxide adduct based polyurethane prepolymers
Assignee: Nopco Chemical Co
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Filing: 1961-08-04
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Granted: 1966-05-10
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Expires: 1981-08-04
Abstract
No abstract record available.
Inventors
- 👤 Davis Gifford Daniel
- 👤 Morris N Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:28
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/487; C08G18/4879
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A COMPOSITION OF MATTER OF THE FOLLOWING STRUCTURE WHEREIN R IS AN ALKYL GROUP OF FROM EIGHT TO TWELVE CARBON ATOMS, R1 AND R2 ARE SELECTED FROM THE GROUP CONSISTING OF METHYL AND HYDROGEN, X IS FROM 1 TO 2, AND R3 IS SELECTED FROM TEH CLASS CONSISTING OF ALKYLENE, ARYLENE, AND ARLYALKYLENE GROUPS, AND WHEN R3 IS ALKYLENE, SAID ALKYLENE R3 HAS FROM ABOUT FOUR TO SIX CARBON ATOMS, WHEN R3 IS ARYLENE, SID ARYLENE R3 HAS FROM ABOUT SIX TO THIRTEEN CARBON ATOMS, AND WHEN R3 IS ARYLAKLYLENE, SAID ARYLALKYLENE R3 HAS FROM ABOUT 7 TO 10 CARBON ATOMS.
Claim 2
Dependent Claim
101 words
A COMPOSITION OF MATTER OF THE FOLLOWING STRUCTURE WHEREIN R IS AN ALKYL GROUP OF FROM EIGHT TO TWELVE CARBON ATOMS, R1 AND R2 ARE SELECTED FROM THE GROUP CONSISTING OF METHYL AND HYDROGEN, X IS FROM 1 TO 2, AND R3 IS SELECTED FROM TEH CLASS CONSISTING OF ALKYLENE, ARYLENE, AND ARLYALKYLENE GROUPS, AND WHEN R3 IS ALKYLENE, SAID ALKYLENE R3 HAS FROM ABOUT FOUR TO SIX CARBON ATOMS, WHEN R3 IS ARYLENE, SID ARYLENE R3 HAS FROM ABOUT SIX TO THIRTEEN CARBON ATOMS, AND WHEN R3 IS ARYLAKLYLENE, SAID ARYLALKYLENE R3 HAS FROM ABOUT 7 TO 10 CARBON ATOMS.
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |