Heat pump and method for designing the same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11441821
SERIAL NO

16489622

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

It is an object of the present invention to provide a heat pump that can use, as a refrigerant, a substance with which a geometric isomer exists, and a method for designing the same. The present invention is a method for designing a heat pump (1) whose closed circuit configured by connecting a compressor (2), a condenser (3), an expansion valve (4), and an evaporator (5) in this order is filled with a refrigerant containing a refrigerant substance with which a geometric isomer may exist, the method including obtaining an upper limit of stable temperature at which isomerization of the refrigerant substance does not proceed, and setting an upper limit usage temperature of the heat pump (1) so as not to exceed the upper limit of the stable temperature.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS LTDTOKYO 108-8215
CENTRAL GLASS CO LTDUBE-SHI YAMAGUCHI 755-0001

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akamatsu, Yoshinori Tokyo, JP 43 568
Hasegawa, Yasushi Tokyo, JP 93 700
Osafune, Kanako Saitama, JP 6 5
Sakyu, Fuyuhiko Saitama, JP 33 407
Suemitsu, Ryosuke Tokyo, JP 12 30
Ueda, Kenji Tokyo, JP 289 3182
Wajima, Kazuki Tokyo, JP 15 32

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Mar 13, 2026
7.5 Year Payment $3600.00 $1800.00 $900.00 Mar 13, 2030
11.5 Year Payment $7400.00 $3700.00 $1850.00 Mar 13, 2034
Fee Large entity fee small entity fee micro entity fee
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