US3054192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of stable polychloroprene
Assignee: Bayer AG
•
Filing: 1958-12-09
•
Granted: 1962-09-18
•
Expires: 1978-12-09
Abstract
No abstract record available.
Inventors
- 👤 Rosahl Dietrich
- 👤 Graulich Wilhelm
- 👤 Holzrichter Hermann
- 👤 Peter Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:57
CPC Classifications
C; C08; C08C; C08C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PROCESS OF DRYING WET POLYCHLOROPRENE WHICH COMPRISES PASSING A WET COAGULATED POLYCHLOROPRENE SHEET HAVING A WATER CONTENT OF ABOUT 40 TO 80 PERCENT BY WEIGHT AND HAVING A THICKNESS CORRESPONDING TO ABOUT 150 TO 500 G./M.2 AT A DENSITY OF 1.23 AS CALCULATED ON DRY WEIGHT, AT A VELOCITY OF AT LEAST 2 METRES/MINUTE AT A DISTANCE OF ABOUT 10 TO 40 CENTIMETERS UNDER INFRARED LIGHT RADIATORS COVERING A LENGTH OF ABOUT 16 TO 40 METERS AND HAVING AN EMISSION CAPACITY OF 3 TO 6 KILOWATTS PER SQUARE METER OF POLYCHLOROPRENE SHEET AND A EMISSION MAXIMUM IN THE RANGE OF 1 TO 3/U.
Claim 2
Dependent Claim
104 words
A PROCESS OF DRYING WET POLYCHLOROPRENE WHICH COMPRISES PASSING A WET COAGULATED POLYCHLOROPRENE SHEET HAVING A WATER CONTENT OF ABOUT 40 TO 80 PERCENT BY WEIGHT AND HAVING A THICKNESS CORRESPONDING TO ABOUT 150 TO 500 G./M.2 AT A DENSITY OF 1.23 AS CALCULATED ON DRY WEIGHT, AT A VELOCITY OF AT LEAST 2 METRES/MINUTE AT A DISTANCE OF ABOUT 10 TO 40 CENTIMETERS UNDER INFRARED LIGHT RADIATORS COVERING A LENGTH OF ABOUT 16 TO 40 METERS AND HAVING AN EMISSION CAPACITY OF 3 TO 6 KILOWATTS PER SQUARE METER OF POLYCHLOROPRENE SHEET AND A EMISSION MAXIMUM IN THE RANGE OF 1 TO 3/U.
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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) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |