Patent US2535604A successfully refreshed from Google Patents.
US2535604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing wax compositions
Assignee: Shell Development Co
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Filing: 1947-09-06
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Granted: 1950-12-26
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Expires: 1967-09-06
Abstract
No abstract record available.
Inventors
- 👤 Knapel F Schiermeier
- 👤 Walter E Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:22
CPC Classifications
C; C09; C09D; C09D191/00; C09D191/06; C09D191/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A PROCESS FOR PREPARING A PROTECTIVE COATING COMPOSITION COMPRISING: HEATING A RESIDUAL PETROLATUM WAX CONTAINING A MINOR AMOUNT OF PETROLEUM OILS, SAID WAX HAVING AN A. S. T. M. MELTING POINT OF BETWEEN ABOUT 130* F AND ABOUT 160* F., TO A TEMPERATURE BETWEEN ABOUT 5* F. AND ABOUT 20*F. ABOVE SAID MELTING POINT, VIGOROUSLY AGITATING THE RESULTANT SEMI-LIQUID, AT THIS TEMPERATURE FOR A PERIOD OF TIME SUFFICIENT TO OBTAIN FINELY DISPERSED SOLID WAX PARTICLES IN A LIQUID PHASE, CONTINUING THE AGITATION WHILE ALLOWING THE RESULTANT SEMI-LIQUID MATERIAL TO COOL TO A TEMPERATURE BETWEEN ABOUT 5*F. AND ABOUT 30*F. BELOW SAID MELTING POINT SUFFICIENTLY TO PARTIALLY SOLIDIFY THE LIQUEFIED PHASE IN A SUBSTANTIALLY INCREASED NUMBER OF FINELY DISPERSED SOLID WAX PARTICLES IN A REMAING LIQUID PHASE, AND BLENDING THEREWITH WITHIN SAID LOWER TEMPERATURE LIMITS AND WITH AGITATION A MINERAL SPIRITS PETROLEUM DISTILLATE HAVING A BOILING POINT RANGE BETWEEN ABOUT 300*F. AND ABOUT 400*F.
Claim 2
Dependent Claim
153 words
A PROCESS FOR PREPARING A PROTECTIVE COATING COMPOSITION COMPRISING: HEATING A RESIDUAL PETROLATUM WAX CONTAINING A MINOR AMOUNT OF PETROLEUM OILS, SAID WAX HAVING AN A. S. T. M. MELTING POINT OF BETWEEN ABOUT 130* F AND ABOUT 160* F., TO A TEMPERATURE BETWEEN ABOUT 5* F. AND ABOUT 20*F. ABOVE SAID MELTING POINT, VIGOROUSLY AGITATING THE RESULTANT SEMI-LIQUID, AT THIS TEMPERATURE FOR A PERIOD OF TIME SUFFICIENT TO OBTAIN FINELY DISPERSED SOLID WAX PARTICLES IN A LIQUID PHASE, CONTINUING THE AGITATION WHILE ALLOWING THE RESULTANT SEMI-LIQUID MATERIAL TO COOL TO A TEMPERATURE BETWEEN ABOUT 5*F. AND ABOUT 30*F. BELOW SAID MELTING POINT SUFFICIENTLY TO PARTIALLY SOLIDIFY THE LIQUEFIED PHASE IN A SUBSTANTIALLY INCREASED NUMBER OF FINELY DISPERSED SOLID WAX PARTICLES IN A REMAING LIQUID PHASE, AND BLENDING THEREWITH WITHIN SAID LOWER TEMPERATURE LIMITS AND WITH AGITATION A MINERAL SPIRITS PETROLEUM DISTILLATE HAVING A BOILING POINT RANGE BETWEEN ABOUT 300*F. AND ABOUT 400*F.
References Cited (Backward Citations)
US4397A
Cited
US2015739A
Cited
US1685068A
Cited
US1685008A
Cited
US2136282A
Cited
US2229658A
Cited
US2306201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |