Patent US3254422A successfully refreshed from Google Patents.
US3254422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of drying polychloroprene sheets
Assignee: EIDP Inc
•
Filing: 1962-07-10
•
Granted: 1966-06-07
•
Expires: 1982-07-10
Abstract
No abstract record available.
Inventors
- 👤 Defiel Charlton John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:43
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/101; B; B29; B29B; B29B13/00; B29B13/06; B29D; B29D7/00; F26B13/06; F26B13/08; F26B3/00; F26B3/28; F26B3/30; F26B3/305; B29C; B29C71/00; B29K; B29K2021/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS FOR DRYING WET CHLOROPRENE POLYMER WHILE SUPPORTED IN THE FORM OF A SHEET ON A GRID SURFACE WHICH COMPRISES EXPOSING SAID SHEET TO A SOURCE OF SUFFICIENT INFRARED RADIATION, WHICH IN THE ABSENCE OF AIR COOLING WOULD HEAT SAID SHEET TO A TEMPERATURE GREATER THAN 160* C., CONCURRENTLY DIRECTING A CURRENT OF AIR AT A TEMPERATURE LESS THAN 75*C. AT SAID SHEET AND ITS SUPPORTING GRID SURFACE TO MAINTAIN THE TEMPERATURE OF SAID SHEET BETWEEN 100 AND 160*C. AND TO MAINTAIN SAID SHEET IN CONTACT WITH SAID SUPPORTING GRID SURFACE.
Claim 2
Dependent Claim
92 words
A PROCESS FOR DRYING WET CHLOROPRENE POLYMER WHILE SUPPORTED IN THE FORM OF A SHEET ON A GRID SURFACE WHICH COMPRISES EXPOSING SAID SHEET TO A SOURCE OF SUFFICIENT INFRARED RADIATION, WHICH IN THE ABSENCE OF AIR COOLING WOULD HEAT SAID SHEET TO A TEMPERATURE GREATER THAN 160* C., CONCURRENTLY DIRECTING A CURRENT OF AIR AT A TEMPERATURE LESS THAN 75*C. AT SAID SHEET AND ITS SUPPORTING GRID SURFACE TO MAINTAIN THE TEMPERATURE OF SAID SHEET BETWEEN 100 AND 160*C. AND TO MAINTAIN SAID SHEET IN CONTACT WITH SAID SUPPORTING GRID SURFACE.
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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |