US2523705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic wax of carnauba type
Assignee: Lovell Chemical Co
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Filing: 1947-02-15
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Granted: 1950-09-26
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Expires: 1967-02-15
Abstract
No abstract record available.
Inventors
- 👤 Stanley P Lovell
- 👤 Harry H Straw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:58
CPC Classifications
C; C08; C08L; C08L91/00; C08L91/06; C08L91/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE PROCESS OF MAKING A CONJOINT CRYSTAL OF POLYETHYLENE AND PARAFFIN, WHICH INCLUDES THE STEPS OF FIRST MELTING PARAFFIN, HEATING IT TO A TEMPERATURE OF APPROXIMATELY 320*F., ADDING SOLID FRANGIBLE POLYETHYLENE IN THE PROPORTIONS 19-91% POLYETHYLENE TO 81-9% PARAFFIN, WHILE MAINTAINING THE PARAFFIN IN SLIGHT AGITATION UNTIL THE POLYETHYLENE LOSES ITS NATURAL TRANSLUCENT APPEARANCE, AT THIS POINT GREATLY INCREASING AGITATION OF THE MOLTEN MASS, AND CONTINUING AGITATION WHILE MAINTAINING SUBSTANTIALLY THE SAID TEMPERATURE UNTIL TO POLYETHYLENE CRYSTALS ARE OBSERVABLE IN COOLED SAMPLES.
Claim 2
Dependent Claim
82 words
THE PROCESS OF MAKING A CONJOINT CRYSTAL OF POLYETHYLENE AND PARAFFIN, WHICH INCLUDES THE STEPS OF FIRST MELTING PARAFFIN, HEATING IT TO A TEMPERATURE OF APPROXIMATELY 320*F., ADDING SOLID FRANGIBLE POLYETHYLENE IN THE PROPORTIONS 19-91% POLYETHYLENE TO 81-9% PARAFFIN, WHILE MAINTAINING THE PARAFFIN IN SLIGHT AGITATION UNTIL THE POLYETHYLENE LOSES ITS NATURAL TRANSLUCENT APPEARANCE, AT THIS POINT GREATLY INCREASING AGITATION OF THE MOLTEN MASS, AND CONTINUING AGITATION WHILE MAINTAINING SUBSTANTIALLY THE SAID TEMPERATURE UNTIL TO POLYETHYLENE CRYSTALS ARE OBSERVABLE IN COOLED SAMPLES.
References Cited (Backward Citations)
US2298846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-25 | 1954-03-27 | 1954-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-25 | 1958-03-27 | 1958-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-25 | 1962-03-27 | 1962-09-26 | $7700.00 | Window Closed / Lapsed |