US2808438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tris-[di(lower) alkylaminoalkyl]-amines
Assignee: CIBA PHARMACENTICAL PRODUCTS I
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Filing: 1953-04-27
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Granted: 1957-10-01
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Expires: 1973-04-27
Abstract
No abstract record available.
Inventors
- 👤 Renat H Mizzoni
- 👤 Caesar R Scholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:48
CPC Classifications
C; C07; C07C; C07C269/00; C07C269/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A MEMBER OF CLASS CONSISTING OF TRIS-(DI-(LOWER) ALKYL-AMINONALKYL)-AMINES WHEREIN EACH OF THE ALKYL GROUPS TO WHICH THE DI-(LOWER)-ALKYLAMINO GROUPS ARE ATTACHED CONTAINS TWO TO FOUR CARBON ATOMS, WITH THE PROVISO THAT AT MOST ONLY ONE SUCH ALKYL GROUP CONTAIN FOUR CARBON ATOMS, AND THEIR ACID SALTS.
Claim 2
Dependent Claim
46 words
A MEMBER OF CLASS CONSISTING OF TRIS-(DI-(LOWER) ALKYL-AMINONALKYL)-AMINES WHEREIN EACH OF THE ALKYL GROUPS TO WHICH THE DI-(LOWER)-ALKYLAMINO GROUPS ARE ATTACHED CONTAINS TWO TO FOUR CARBON ATOMS, WITH THE PROVISO THAT AT MOST ONLY ONE SUCH ALKYL GROUP CONTAIN FOUR CARBON ATOMS, AND THEIR ACID SALTS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |