Patent US2368836A successfully refreshed from Google Patents.
Patent US3222326A successfully refreshed from Google Patents.
US3222326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of alkylene thioethers
Assignee: EIDP Inc
•
Filing: 1962-01-29
•
Granted: 1965-12-07
•
Expires: 1982-01-29
Abstract
No abstract record available.
Inventors
- 👤 Brodoway Nicolas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:55
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C08G75/06; C08G75/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
AN ELASTOMERIC POLYMER SELECTED FROM THE GROUP CONSISTING OF (A) A MULTIPLICITY OF MONOMER UNITS OF THE STRUCTURE -CH2-CH(-CH3)-S- (1) AND (B) A MULTIPLICITY OF SAID (1) MONOMER UNITS TOGETHER WITH MONOMER UNITS OF THE STRUCTURE -CH2-CH(-R)-S- (2) WHEREIN R OF SAID MONOMER UNIT (2) IS INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF R'' AND R''-O-CH2-, SAID R'' BEING SELECTED FROM THE GROUP CONSISTING OF CYCLIC AND ACYCLIC HYHDROCARBON RADICALS CONTAINING ONE ALIPHATIC CARBON-TO-CARBON DOUBLE BOND AND 3 TO 8 CARBON ATOMS; THE NUMBER OF SAID (2) UNITS BEING NO GREATER THAN THE NUMBER OF (1) UNITS; SAID POLYMER HAVING A MINIMUM INHERENT VISCOSITY OF 0.45, DETERMINED AT 30*C. AS A SOLUTION OF 0.1 GRAM OF POLYMER IN 100 ML. OF TOLUENE.
Claim 2
Dependent Claim
122 words
AN ELASTOMERIC POLYMER SELECTED FROM THE GROUP CONSISTING OF (A) A MULTIPLICITY OF MONOMER UNITS OF THE STRUCTURE -CH2-CH(-CH3)-S- (1) AND (B) A MULTIPLICITY OF SAID (1) MONOMER UNITS TOGETHER WITH MONOMER UNITS OF THE STRUCTURE -CH2-CH(-R)-S- (2) WHEREIN R OF SAID MONOMER UNIT (2) IS INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF R'' AND R''-O-CH2-, SAID R'' BEING SELECTED FROM THE GROUP CONSISTING OF CYCLIC AND ACYCLIC HYHDROCARBON RADICALS CONTAINING ONE ALIPHATIC CARBON-TO-CARBON DOUBLE BOND AND 3 TO 8 CARBON ATOMS; THE NUMBER OF SAID (2) UNITS BEING NO GREATER THAN THE NUMBER OF (1) UNITS; SAID POLYMER HAVING A MINIMUM INHERENT VISCOSITY OF 0.45, DETERMINED AT 30*C. AS A SOLUTION OF 0.1 GRAM OF POLYMER IN 100 ML. OF TOLUENE.
References Cited (Backward Citations)
US2185660A
Cited
US2183860A
Cited
US2724719A
Cited
US2891072A
Cited
US3000865A
Cited
US3071593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |