Patent US2962466A successfully refreshed from Google Patents.
US2962466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of introducing modifier into a polymer melt
Assignee: EIDP Inc
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Filing: 1957-02-07
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Granted: 1960-11-29
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Expires: 1977-02-07
Abstract
No abstract record available.
Inventors
- 👤 John E Parnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:28
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/2053; C08J3/2056
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR INTRODUCING A LIQUID BORNE MODIFIER UNIIFORMLY INTO A STREAM OF POLYMER MELT WHICH COMPRISES MIXING THE SAID LIQUID BORNE MODIFIER AS IT IS BEING LED TO THE STREAM OF POLYMER MELT WITH AN INERT GAS, THE SAID GAS BEING MAINTAINED AT A PRESSURE AT LEAST ABOUT 5
Claim 2
Dependent Claim
50 words
A PROCESS FOR INTRODUCING A LIQUID BORNE MODIFIER UNIIFORMLY INTO A STREAM OF POLYMER MELT WHICH COMPRISES MIXING THE SAID LIQUID BORNE MODIFIER AS IT IS BEING LED TO THE STREAM OF POLYMER MELT WITH AN INERT GAS, THE SAID GAS BEING MAINTAINED AT A PRESSURE AT LEAST ABOUT 5
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) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |