US3519603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable mixtures of diepoxy compounds,disecondary amines,and polyamines containing at least 3 active hydrogen atoms linked to nitrogen
Assignee: BASF Schweiz AG
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Filing: 1968-05-28
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Granted: 1970-07-07
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Expires: 1988-05-28
Abstract
No abstract record available.
Inventors
- 👤 Friedrich Lohse
- 👤 Rolf Schmid
- 👤 Hans Batzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:27
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/40; C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5026; C08G65/00; C08G65/02; C08G65/32; C08G65/321; C08G65/322; C08G65/329; C08G65/333; C08G65/33365; C08G65/33368; C08G65/33372; C08L; C08L63/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2642412A
Cited
US2817644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |