US2816845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Petroleum wax compositions
Assignee: Gulf Research and Development Co
•
Filing: 1955-06-13
•
Granted: 1957-12-17
•
Expires: 1975-06-13
Abstract
No abstract record available.
Inventors
- 👤 Robert G Capell
- 👤 Philip R Templin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:43
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A PETROLEUM WAX COMPOSITION STABILIZED AGAINST DISCOLORATION BY LIGHT CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF PARAFFIN WAX, FROM 1 TO 10 PERCENT BY WEIGHT OF MICROCRYSTALLINE WAX, AND FROM ABOUT 0.02 TO 0.5 PERCENT BY WEIGHT OF DIBENZALACETONE.
Claim 2
Dependent Claim
39 words
A PETROLEUM WAX COMPOSITION STABILIZED AGAINST DISCOLORATION BY LIGHT CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF PARAFFIN WAX, FROM 1 TO 10 PERCENT BY WEIGHT OF MICROCRYSTALLINE WAX, AND FROM ABOUT 0.02 TO 0.5 PERCENT BY WEIGHT OF DIBENZALACETONE.
References Cited (Backward Citations)
US2299951A
Cited
GB541638A
Cited
US2443221A
Cited
US2646362A
Cited
US2730452A
Cited
US2755193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |