US2711966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parting composition
Assignee: Lukens Steel Co
•
Filing: 1949-12-01
•
Granted: 1955-06-28
•
Expires: 1969-12-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas T Watson
- 👤 Riggall Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:30
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/68; Y; Y10; Y10S; Y10S29/00; Y10S29/038; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PARTING COMPOSITION ADAPTED FOR THE HOT PACKWORKING OF A PLURALITY OF METAL MEMBERS COMPRISING A HOMOGENEOUS SUSPENSION OF INORGANIC MATERIAL, WHICH IS SUBSTANTIALLY INJUSIBLE AND NON-DECOMPOSABLE AT THE HEIGH EST TEMPERATURE ENCOUNTERED DURING THE HOT WOEKING OPERATION, AND HAVING A PARTICLE SIZE SMALLER THAN 100 MESH, IN A SOLUTION OF A CELLULOSE ETHERS AND CELLULOSE ESTERS IN GROUP CONSISTING OF CELLULOSE ETHERS AND CELLULOSE ESTERS IN A VOLATILE ORGANIC NON-AROMATIC SOLVENT THEREFOR, THE CONCENTRATION OF SAID CELLULOSE DERIVATIVE IN SAID SOLVENT BEING BETWEEN ABOUT 0.04% AND ABOUT 4% BY WEIGHT, AND THE PROPORTION OF SAID INORGANIC MATERIAL TO SAID SOLUTION BEING ABOUT 3 VOLUMES OF THE FORMER PER VOLUME OF THE LATTER.
Claim 2
Dependent Claim
113 words
A PARTING COMPOSITION ADAPTED FOR THE HOT PACKWORKING OF A PLURALITY OF METAL MEMBERS COMPRISING A HOMOGENEOUS SUSPENSION OF INORGANIC MATERIAL, WHICH IS SUBSTANTIALLY INJUSIBLE AND NON-DECOMPOSABLE AT THE HEIGH EST TEMPERATURE ENCOUNTERED DURING THE HOT WOEKING OPERATION, AND HAVING A PARTICLE SIZE SMALLER THAN 100 MESH, IN A SOLUTION OF A CELLULOSE ETHERS AND CELLULOSE ESTERS IN GROUP CONSISTING OF CELLULOSE ETHERS AND CELLULOSE ESTERS IN A VOLATILE ORGANIC NON-AROMATIC SOLVENT THEREFOR, THE CONCENTRATION OF SAID CELLULOSE DERIVATIVE IN SAID SOLVENT BEING BETWEEN ABOUT 0.04% AND ABOUT 4% BY WEIGHT, AND THE PROPORTION OF SAID INORGANIC MATERIAL TO SAID SOLUTION BEING ABOUT 3 VOLUMES OF THE FORMER PER VOLUME OF THE LATTER.
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |