Grease composition for heat fixing devices and heat fixing apparatus
US12379682B2 · kind B2 · utility
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Key dates
| Filing date | May 9, 2024 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | May 9, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A grease composition for heat fixing devices contains a base oil and polytetrafluoroethylene. The base oil contains a perfluoropolyether having at least one of the structures represented by formulas (I) and (II) in the molecule and has a kinematic viscosity v40 of 800 mm2/s to 2500 mm2/s at 40° C., and whose kinematic viscosity v200 at 200° C. is 1/50 or less of the kinematic viscosity v40.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.