US3321391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for studying effects of polymerization in d.c. electric field
Assignee: Individual
•
Filing: 1963-12-04
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Granted: 1967-05-23
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Expires: 1983-12-04
Abstract
No abstract record available.
Inventors
- 👤 Robert W Warfield
- 👤 Marcella C Petree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:33
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A METHOD OF DETERMINING THE EXTENT OF ORENTATION OF A POLYMER WHICH HAS BEEN POLYMERIZED IN A STRONG ELECTRIC FIELD COMPRISING THE STEPS OF: CARRYING OUT SAID POLYMERIZATION WITH THE PLYMER CONTAINED BETWEEN A PAIR OF ELECTRODES, AFTER POLYMERIZATION IS COMPLETE, APPLYING A RELATIVELY LOW VOLTAGE ACROSS SAID ELECTRODES TO ESTABLISH AN ELECTRIC FIELD IN SAID POLYMER, MEASURING THE CURRENT THROUGH SAID POLYMER AS A MEASURE OF THE RESISTIBITY THEREOF,
Claim 2
Independent Claim
70 words
A METHOD OF DETERMINING THE EXTENT OF ORENTATION OF A POLYMER WHICH HAS BEEN POLYMERIZED IN A STRONG ELECTRIC FIELD COMPRISING THE STEPS OF: CARRYING OUT SAID POLYMERIZATION WITH THE PLYMER CONTAINED BETWEEN A PAIR OF ELECTRODES, AFTER POLYMERIZATION IS COMPLETE, APPLYING A RELATIVELY LOW VOLTAGE ACROSS SAID ELECTRODES TO ESTABLISH AN ELECTRIC FIELD IN SAID POLYMER, MEASURING THE CURRENT THROUGH SAID POLYMER AS A MEASURE OF THE RESISTIBITY THEREOF,
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |