Patent US3819250A successfully refreshed from Google Patents.
US2588151A
Expired / Lapsed
US
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Apparatus for producing uniform foam structures
Assignee: General Electric Co
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Filing: 1948-09-30
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Granted: 1952-03-04
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Expires: 1968-09-30
Abstract
No abstract record available.
Inventors
- 👤 John D Nelson
- 👤 James J Pyle
- 👤 James W Underwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:04
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
APPARATUS FOR FORMING CELLULAR MOLDED PHENOLIC PARTS COMPRISING AN OPEN-TOPPED RECEPTACLE TO RECEIVE A POTENTIALLY SELF-EXPANSIBLE PHENOLIC RESIN, A PERFORATED FORM ADAPTED TO ENCLOSE SAID RECEPTACLE, SAID FORM AND SAID RECEPTACLE BEING MOVABLE RELATIVE TO EACH OTHER IN A SUBSTANTIALLY VERTICAL DIRECTION UPON EX-
Claim 2
Dependent Claim
44 words
APPARATUS FOR FORMING CELLULAR MOLDED PHENOLIC PARTS COMPRISING AN OPEN-TOPPED RECEPTACLE TO RECEIVE A POTENTIALLY SELF-EXPANSIBLE PHENOLIC RESIN, A PERFORATED FORM ADAPTED TO ENCLOSE SAID RECEPTACLE, SAID FORM AND SAID RECEPTACLE BEING MOVABLE RELATIVE TO EACH OTHER IN A SUBSTANTIALLY VERTICAL DIRECTION UPON EX-
References Cited (Backward Citations)
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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) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |