Patent US4302560A successfully refreshed from Google Patents.
US3671624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of using a portable cooling platen
Assignee: Texaco Inc
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Filing: 1970-04-30
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Granted: 1972-06-20
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Expires: 1990-04-30
Abstract
Abstract A method of cooling a molded plastic article in a press without cooling the heated press platens. It employs portable cooling platens and involves opening the press, inserting the cooling platens and reapplying pressure while cooling the plastic article until it is frozen.
Inventors
- 👤 Michael P Antalek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:57
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/32; B29C43/52; B29C35/00; B29C35/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
28 words
A method according to claim 1, wherein said cooling comprises waiting for a period of time sufficient to dissipate heat in said mold without cooling said press platens.
Claim 2
Dependent Claim
17 words
A method according to claim 2 further including repeating the process to mold another sample without delay.
Claim 3
Dependent Claim
35 words
A method according to claim 3 wherein said cooling comprises applying a cooling fluid to the cooling platens for a period of time sufficient ti dissipate heat in said mold without cooling said press platens.
Claim 4
Dependent Claim
17 words
A method according to claim 4 further including repeating the process to mold another sample without delay.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |