US2656394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of a naphthyl dialkyl methine
Assignee: Honeywell International Inc
•
Filing: 1951-06-23
•
Granted: 1953-10-20
•
Expires: 1971-06-23
Abstract
No abstract record available.
Inventors
- 👤 George G Joris
- 👤 William D Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:57
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/02; C07C409/04; C07C409/08; C07C407/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
PROCESS OF OXIDIZING A NAPHTHYL DIALKYL METHINE TO THE CORRESPONDING METHINE HYDROPEROXIDE, WHICH PROCESS COMPRISES CONTACTING SAID METHINE IN LIQUID PHASE WITH ELEMENTAL OXYGEN IN PRESENCE OF LEAD DIOXIDE CATALYST, AND TERMINATING THE OXIDATION AND RECOVERING PRODUCTS AT A STAGE WHEN LANALYSIS OF THE PRODUCTS SHOWS HYDROPEROXIDE PREPONDERATING HEAVILY OVER BYPRODUCTS.
Claim 2
Dependent Claim
51 words
PROCESS OF OXIDIZING A NAPHTHYL DIALKYL METHINE TO THE CORRESPONDING METHINE HYDROPEROXIDE, WHICH PROCESS COMPRISES CONTACTING SAID METHINE IN LIQUID PHASE WITH ELEMENTAL OXYGEN IN PRESENCE OF LEAD DIOXIDE CATALYST, AND TERMINATING THE OXIDATION AND RECOVERING PRODUCTS AT A STAGE WHEN LANALYSIS OF THE PRODUCTS SHOWS HYDROPEROXIDE PREPONDERATING HEAVILY OVER BYPRODUCTS.
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) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |