US2989782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing molded foamed resin article
Assignee: Monsanto Chemicals Ltd
•
Filing: 1956-07-05
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Granted: 1961-06-27
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Expires: 1976-07-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Raymond A Barkhuff
- 👤 Ralph I Dunlap
- 👤 Platzer Norbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:05
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/22; C08J9/224; C08J2325/00; Y; Y10; Y10S; Y10S264/00; Y10S264/05; Y10S273/00; Y10S273/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
IN THE METHOD FOR PREPARING MOLDED FOAMED RESIN ARTICLES IN WHICH PARTICULATE FOAMABLE STYRENE POLYMER PARTICLES HAVING INCORPORATED THEREIN, AS A FOAMING AGENT, AN ALIPHATIC HYDROCARBON BOILING WITHIN THE RANGE OF 10-80* C. ARE PLACED IN A MOLD AND THEN HEATED TO A TEMPERATURE AT WHICH THE RESIN PARTICLES FOAM, FILL THE MOLD AND KNIT TOGETHER TO FORM A UNITARY STRUCTURE, THE
Claim 2
Dependent Claim
62 words
IN THE METHOD FOR PREPARING MOLDED FOAMED RESIN ARTICLES IN WHICH PARTICULATE FOAMABLE STYRENE POLYMER PARTICLES HAVING INCORPORATED THEREIN, AS A FOAMING AGENT, AN ALIPHATIC HYDROCARBON BOILING WITHIN THE RANGE OF 10-80* C. ARE PLACED IN A MOLD AND THEN HEATED TO A TEMPERATURE AT WHICH THE RESIN PARTICLES FOAM, FILL THE MOLD AND KNIT TOGETHER TO FORM A UNITARY STRUCTURE, THE
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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) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |