| Title of Invention | A LUBRICANT/WORKING FLUID COMPOSITION FOR MECHANICAL VAPOUR COMPRESSION TYPE HEAT TRANSFER DEVICES. |
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| Abstract | A lubricanct/working fluid composition for use in mechanical vapour compression type heat transfer devices is describ wherein the working fluid is preferably tetrafluoroethane and the lubricant is an ester which miscible with the working fluid at 10% over a temperature range of -50°C to +0O°C and has a viscosity of 5 to 1 DO c5t at 4Q°C. Useful esters include pentaerythritol psrtia ester of straight chain -C.- or branched chain C- carboxylic acids. The esters are compatible with non-chlorine containing working fluids and exhibit a low level of corrosion. |
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151-BOM-1991-CANCELLED PAGES.pdf
151-BOM-1991-CORRESPONDENCE(IPO).pdf
151-BOM-1991-CORRESPONDENCE(RECEIVED).pdf
151-BOM-1991-FORM 2(GRANTED).pdf
151-BOM-1991-SPECIFICATION(AMENDED).pdf
| Patent Number | 171568 | |||||||||
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| Indian Patent Application Number | 151/BOM/1991 | |||||||||
| PG Journal Number | 40/2012 | |||||||||
| Publication Date | 05-Oct-2012 | |||||||||
| Grant Date | 17-Dec-1993 | |||||||||
| Date of Filing | 23-May-1991 | |||||||||
| Name of Patentee | HINDUSTAN LEVER LIMITED, | |||||||||
| Applicant Address | HINDUSTAN LEVER HOUSE, 165/166 BACKBAY RECLAMATION, MUMBAI. | |||||||||
Inventors:
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| PCT International Classification Number | A47D3/04 | |||||||||
| PCT International Application Number | N/A | |||||||||
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