US2589523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blending of hydroformer feed stocks
Assignee: Pure Oil Co
•
Filing: 1948-06-21
•
Granted: 1952-03-18
•
Expires: 1968-06-21
Abstract
No abstract record available.
Inventors
- 👤 Byron B Woertz
- 👤 Lawrence M Henderson
- 👤 Charles M Ridgway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:15
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G2400/00; C10G2400/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
THE METHOD OF PREPARING ALKYLATED BENZENE HYDROCARBONS COMPRISING, CONTACTING A MIXTURE
Claim 2
Independent Claim
11 words
THE METHOD OF PREPARING ALKYLATED BENZENE HYDROCARBONS COMPRISING, CONTACTING A MIXTURE
References Cited (Backward Citations)
US2313117A
Cited
US2338573A
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US2328773A
Cited
US2392398A
Cited
US2375573A
Cited
US2406394A
Cited
US2406117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |