US3109836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing aromatic polyamides from acetamidobenzoic acids
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1959-12-31
•
Granted: 1963-11-05
•
Expires: 1979-12-31
Abstract
No abstract record available.
Inventors
- 👤 David A Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:14
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A METHOD OF PRODUCING A POLYMER OF ACETAMIDOBENZOIC ACID WHICH CONSISTS OF HEATING SAID ACETAMIDOBENZOIC ACID ALONE FOR ABOUT 3 HOURS AT 200* TO 300*C. AND AT 3 TO 50 MM. OF MERCURY PRESSURE.
Claim 2
Independent Claim
34 words
A METHOD OF PRODUCING A POLYMER OF ACETAMIDOBENZOIC ACID WHICH CONSISTS OF HEATING SAID ACETAMIDOBENZOIC ACID ALONE FOR ABOUT 3 HOURS AT 200* TO 300*C. AND AT 3 TO 50 MM. OF MERCURY PRESSURE.
References Cited (Backward Citations)
US2642456A
Cited
US2688011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |