US3283043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for immersion molding a foamable polyvinyl chloride and polyisocyanate preform
Assignee: Pneumatiques Caoutchouc Manufacture et Plastiques Kleber Colombes SA
•
Filing: 1963-02-04
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Granted: 1966-11-01
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Expires: 1983-02-04
Abstract
No abstract record available.
Inventors
- 👤 Landler Yvan
- 👤 Reygrobellet Joseph
- 👤 Vernon Michel Ferdinand
- 👤 Leclercq Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:06
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; Y; Y10; Y10S; Y10S264/00; Y10S264/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A METHOD FOR THE MANUFACTURE OF A POLYVINYL CHLORIDE CELLULAR OBJECT WHICH COMPRISES IMMERSING A PREFORMED CELLULAR OBJECT COMPRISING POLYVINYL CHLORIDE AND AN ISOCYANATE OR POLYISOCYANATE IN AN AQUEOUS BATH AND MAINTAINING THE UPPER SURFACE OF SAID IMMERSED OBJECT IN CONTACT WITH AT LEAST APPROXIMATELY HORIZONTAL SHELF MEANS AND OPPOSING HYDROSTATIC THRUST DIRECTED FROM THE BOTTOM OF THE BATH IN THE UPWARD DIRECTION TO WHICH SAID
Claim 2
Independent Claim
66 words
A METHOD FOR THE MANUFACTURE OF A POLYVINYL CHLORIDE CELLULAR OBJECT WHICH COMPRISES IMMERSING A PREFORMED CELLULAR OBJECT COMPRISING POLYVINYL CHLORIDE AND AN ISOCYANATE OR POLYISOCYANATE IN AN AQUEOUS BATH AND MAINTAINING THE UPPER SURFACE OF SAID IMMERSED OBJECT IN CONTACT WITH AT LEAST APPROXIMATELY HORIZONTAL SHELF MEANS AND OPPOSING HYDROSTATIC THRUST DIRECTED FROM THE BOTTOM OF THE BATH IN THE UPWARD DIRECTION TO WHICH SAID
References Cited (Backward Citations)
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US1429507A
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US1698846A
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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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |