Patent US3215760A successfully refreshed from Google Patents.
US3215760A
Expired / Lapsed
US
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Process of a voiding gel particles during extrusion by removal of air from the filter pack prior to spinning
Assignee: EIDP Inc
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Filing: 1962-11-27
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Granted: 1965-11-02
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Expires: 1982-11-27
Abstract
No abstract record available.
Inventors
- 👤 Grace Harold Padget
- 👤 Bieber Roman Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:26
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/10; D01D1/106; B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/50; B29C48/69; D01D1/06; B29C48/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PROCESS INCLUDING THE STEPS OF ASSEMBLING A SPINNING PACK CONTAINING A PARTICULATE FILTERING MEDIUM AND PRE-HEATING THE PACK, THE IMPROVEMENT OF WHICH COMPRISES REMOVING AIR FROM THE PACK PREPARATORY TO ITS INSTALLATION IN A SPINNING MACHINE.
Claim 2
Dependent Claim
37 words
A PROCESS INCLUDING THE STEPS OF ASSEMBLING A SPINNING PACK CONTAINING A PARTICULATE FILTERING MEDIUM AND PRE-HEATING THE PACK, THE IMPROVEMENT OF WHICH COMPRISES REMOVING AIR FROM THE PACK PREPARATORY TO ITS INSTALLATION IN A SPINNING MACHINE.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |