US3269810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antioxidants for cracked petroleum distillates, especially gasoline
Assignee: ChampionX LLC
•
Filing: 1963-09-19
•
Granted: 1966-08-30
•
Expires: 1983-09-19
Abstract
No abstract record available.
Inventors
- 👤 Walter M Chamot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:52
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/221; C08; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
CRACKED GASOLINE SUBJECT TO OXIDATION CONTAINING SMALL, ANTIOXIDANT AMOUNTS OF SUBSTANTIALLY LINEAR CONDENSATION POLYMERS FORMED BY THE CONDENSATION REACTION OF PHENOL, ALKYLENE POLYAMINES HAVING REACTIVE HYDROGENS ON AT LEAST TWO AMINO NITROGENS, AND LOWER ALIPHATIC ALDEHYDES SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE AND ACETALDEHYDE, THE MOL RATIO OF PHENOL TO SAID ALKYLENE POLYAMINES BEING IN THE RANGE OF 1:0.5-1, RESPECTIVELY, THE MOLS OF SAID ALDEHYDE BEING 0.9-1:1 TIMES THE TOTAL MOLS OF PHENOL AND SAID ALKYLENE POLYAMINES, AND THE AMOUNT OF ALDEHYDE IN MOLS BEING FROM 1.5-2.05 TIMES THE MOLS OF PHENOL.
Claim 2
Dependent Claim
93 words
CRACKED GASOLINE SUBJECT TO OXIDATION CONTAINING SMALL, ANTIOXIDANT AMOUNTS OF SUBSTANTIALLY LINEAR CONDENSATION POLYMERS FORMED BY THE CONDENSATION REACTION OF PHENOL, ALKYLENE POLYAMINES HAVING REACTIVE HYDROGENS ON AT LEAST TWO AMINO NITROGENS, AND LOWER ALIPHATIC ALDEHYDES SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE AND ACETALDEHYDE, THE MOL RATIO OF PHENOL TO SAID ALKYLENE POLYAMINES BEING IN THE RANGE OF 1:0.5-1, RESPECTIVELY, THE MOLS OF SAID ALDEHYDE BEING 0.9-1:1 TIMES THE TOTAL MOLS OF PHENOL AND SAID ALKYLENE POLYAMINES, AND THE AMOUNT OF ALDEHYDE IN MOLS BEING FROM 1.5-2.05 TIMES THE MOLS OF PHENOL.
References Cited (Backward Citations)
US2336006A
Cited
US2453850A
Cited
US2353192A
Cited
US2459112A
Cited
US2504742A
Cited
US2984550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |