Refrigerator oil and working fluid composition for refrigerator

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11208608
APP PUB NO 20200199476A1
SERIAL NO

16343226

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Abstract

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In an aspect, the present invention provides a refrigerating machine oil comprising a poly(meth)acrylate as a base oil, wherein the poly(meth)acrylate comprises a hydrogenated poly(meth)acrylate, a content of a unit having a carbon-carbon double bond present at a terminal in the poly(meth)acrylate is 6% by mole or less relative to total units constituting the poly(meth)acrylate, and a kinematic viscosity at 40° C. of the hydrogenated poly(meth)acrylate is 1 to 1000 mm2/s, the refrigerating machine oil being used with a refrigerant comprising a refrigerant selected from difluoromethane, a mixture of difluoromethane and pentafluoroethane, a mixture of difluoromethane, pentafluoroethane, and 1, 1, 1, 2-tetrafluoroethane, a mixture of pentafluoroethane, 1, 1, 1, 2-tetrafluoroethane, and 1, 1, 1-trifluoroethane, an unsaturated hydrofluorocarbon, a hydrocarbon, and carbon dioxide.

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Patent Owner(s)

Patent OwnerAddress
ENEOS CORPORATIONCHIYODA-KU TOKYO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nakajima, Tatsuki Tokyo, JP 13 5
Ogata, Hidetoshi Tokyo, JP 33 24
Okido, Takeshi Tokyo, JP 26 112
Tada, Akira Tokyo, JP 41 197
Yamaguchi, Kentaro Tokyo, JP 79 573

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Maintenance Fees

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3.5 Year Payment $1600.00 $800.00 $400.00 Jun 28, 2025
7.5 Year Payment $3600.00 $1800.00 $900.00 Jun 28, 2029
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jun 28, 2033
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Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00