US3422143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha,alpha,alpha',alpha'-tetramethyl-p-xylylenediamine
Assignee: EIDP Inc
•
Filing: 1964-11-16
•
Granted: 1969-01-14
•
Expires: 1984-11-16
Abstract
No abstract record available.
Inventors
- 👤 Charles G Bottomley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:28
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7657; C08G18/7692; C07; C07C; C07C331/00; C07C331/16; C07C331/18; C07C331/22; C07C331/24; C08G18/7614; C08G18/7628; C08G69/00; C08G69/02; C08G69/26; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/93; Y10S585/935
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2080770A
Cited
US2464592A
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US2685573A
Cited
US2689255A
Cited
US2900369A
Cited
GB939107A
Cited
US3111536A
Cited
US3150183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |