US2638459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing petroleum wax compositions containing a small amount of a polyethylene
Assignee: Gulf Research and Development Co
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Filing: 1950-12-04
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Granted: 1953-05-12
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Expires: 1970-12-04
Abstract
No abstract record available.
Inventors
- 👤 John R Bowman
- 👤 William P Ridenour
- 👤 Whittaker June Hollenback
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:49
CPC Classifications
C; C08; C08L; C08L91/00; C08L91/06; C08L91/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A METHOD FOR PREPARING AN IMPROVED PARAFFIN WAX COMPRISING MELTING TOGETHER SOLID POLYMERIZED ETHYLENE AND PARAFFIN WAX IN APPROXIMATELY EQUAL QUANTITIES, MIXING UNTIL HOMOGENEOUS, AND SUBSEQUENTLY ADDING THERETO A QUANTITY OF MOLTEN PARAFFIN WAX SUCH THAT THE AMOUNT OF POLYMERIZED ETHYLENE IN THE COMBINED WAX AND POLYMERIZED ETHYLENE COMPOSITION IS FROM 0.001 TO 7 PER CENT.
References Cited (Backward Citations)
US2504270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |