US3429906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal chelates of bicyclononanedione
Assignee: Air Products and Chemicals Inc
•
Filing: 1965-07-09
•
Granted: 1969-02-25
•
Expires: 1985-07-09
Abstract
No abstract record available.
Inventors
- 👤 Andrew A Swigar
- 👤 Robert A Walde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:17
CPC Classifications
C; C07; C07C; C07C251/00; C07C251/72; C08; C08K; C08K5/00; C08K5/0091; C08K5/16; C08K5/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |