Patent US2962475A successfully refreshed from Google Patents.
US2962475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of chloroprene
Assignee: Bayer AG
•
Filing: 1958-01-16
•
Granted: 1960-11-29
•
Expires: 1978-01-16
Abstract
No abstract record available.
Inventors
- 👤 Malz Hugo
- 👤 Rosahl Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:45
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F36/14; C08F36/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PROCESS OF POLYMERIZING CHLOROPRENE WHICH COMPRISES CONTACTING CHLOROPRENE IN AQUEOUS DISPERSION AT A PH VALUE OF ABOUT 7 TO 12 AND AT A TEMPERATURE OF ABOUT 40 TO 110*C. WITH ABOUT 0.005 TO 2%, BASED ON THE WEIGHT OF CHLOROPRENE, OF A COMPOUND CONSISTING OF A 6 TO 8 MEMBERED RING, SAID RING CONTAINING AS SOLE MEMBERS NITROGEN AND SULFUR ATOMS AND CONTAINING AT LEAST ONCE A MEMBER SELECTED FROM THE GROUP CONSISTING
Claim 2
Dependent Claim
74 words
A PROCESS OF POLYMERIZING CHLOROPRENE WHICH COMPRISES CONTACTING CHLOROPRENE IN AQUEOUS DISPERSION AT A PH VALUE OF ABOUT 7 TO 12 AND AT A TEMPERATURE OF ABOUT 40 TO 110*C. WITH ABOUT 0.005 TO 2%, BASED ON THE WEIGHT OF CHLOROPRENE, OF A COMPOUND CONSISTING OF A 6 TO 8 MEMBERED RING, SAID RING CONTAINING AS SOLE MEMBERS NITROGEN AND SULFUR ATOMS AND CONTAINING AT LEAST ONCE A MEMBER SELECTED FROM THE GROUP CONSISTING
References Cited (Backward Citations)
US1950438A
Cited
US2900358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |