Patent US5121355A successfully refreshed from Google Patents.
US3223689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of fluorinated unsaturated hydrocarbons with non-fluorinated nitroso compounds and method of preparing same
Assignee: Individual
•
Filing: 1962-02-27
•
Granted: 1965-12-14
•
Expires: 1982-02-27
Abstract
No abstract record available.
Inventors
- 👤 Haszeldine Robert Neville
- 👤 Banks Ronald Eric
- 👤 Mccreath Michael King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:47
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
7 words
COPOLYMERS OF NITROSO COMPOUNDS HAVING THE FORMULA
Claim 2
Dependent Claim
7 words
COPOLYMERS OF NITROSO COMPOUNDS HAVING THE FORMULA
Claim 3
Dependent Claim
148 words
POLYMRIC COMPOUNDS HAVING A MOLECULAR WEIGHT OF AT LEAST 1,000 AND CONSISTING ESSENTIALLY OF A CHAIN OF REPEATING UNITS HAVING THE GENERAL FORMULA -N(-C(-R'')(-R*)-R)-O-(C2F2(-R")(-R"''))WHERE R IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE, ALKYL, ARYL, AND CYCLOALKYL GROUPS, AND ALKYL, ARYL, AND CYCLOALKYL GROUPS SUBSTITUTED BY NON-INTERFERING SUBSTITUENTS, R* AND R'' ARE SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL AND CYCLOALKYL GROUPS, AND ALKYL, ARYL AND CYCLOALKYL GROUPS SUBSTITUTED BY NON-INTERFERING SUBSTITUENTS, R" IS SELECTED FROM THE GROUP CONSISTING OF FLUORINE, CHLORINE, HYDROGEN, AND ALKYL FLUOROALKYL, CHLOROALKYL AND FLUOROCHLOROALKYL GROUPS HAVING FROM ONE TO 10 CARBON ATOMS AND R"'' IS SELECTED FROM THE GROUP CONSISTING OF FLUORINE, CHLORINE, HYDROGEN, AND ALKYL, ALKENYL, FLUOROALKYL, FLUOROALKENYL, CLOROALKYL, CHLOROALKENYL, FLUOROCHLOROALKYL AND FLUOROCHLOROALKENYL GROUPS HAVING FROM 1 TO 10 CARBON ATOMS; PROVIDED THAT WHEN R" IS FLUORINE, R"'' MAY BE A CF3(CF2)N-GROUP WHERE N IS AN INTEGER NOT GREATER THAN 20.
Claim 4
Dependent Claim
148 words
POLYMRIC COMPOUNDS HAVING A MOLECULAR WEIGHT OF AT LEAST 1,000 AND CONSISTING ESSENTIALLY OF A CHAIN OF REPEATING UNITS HAVING THE GENERAL FORMULA -N(-C(-R'')(-R*)-R)-O-(C2F2(-R")(-R"''))WHERE R IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE, ALKYL, ARYL, AND CYCLOALKYL GROUPS, AND ALKYL, ARYL, AND CYCLOALKYL GROUPS SUBSTITUTED BY NON-INTERFERING SUBSTITUENTS, R* AND R'' ARE SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL AND CYCLOALKYL GROUPS, AND ALKYL, ARYL AND CYCLOALKYL GROUPS SUBSTITUTED BY NON-INTERFERING SUBSTITUENTS, R" IS SELECTED FROM THE GROUP CONSISTING OF FLUORINE, CHLORINE, HYDROGEN, AND ALKYL FLUOROALKYL, CHLOROALKYL AND FLUOROCHLOROALKYL GROUPS HAVING FROM ONE TO 10 CARBON ATOMS AND R"'' IS SELECTED FROM THE GROUP CONSISTING OF FLUORINE, CHLORINE, HYDROGEN, AND ALKYL, ALKENYL, FLUOROALKYL, FLUOROALKENYL, CLOROALKYL, CHLOROALKENYL, FLUOROCHLOROALKYL AND FLUOROCHLOROALKENYL GROUPS HAVING FROM 1 TO 10 CARBON ATOMS; PROVIDED THAT WHEN R" IS FLUORINE, R"'' MAY BE A CF3(CF2)N-GROUP WHERE N IS AN INTEGER NOT GREATER THAN 20.
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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |