MA

Masao Akei

ET Emerson Climate Technologies: 31 patents #8 of 353Top 3%
CA Carrier: 5 patents #420 of 2,507Top 20%
TI Trane International: 1 patents #407 of 658Top 65%
📍 La Crosse, WI: #3 of 263 inventorsTop 2%
🗺 Wisconsin: #696 of 40,088 inventorsTop 2%
Overall (All Time): #88,472 of 4,157,543Top 3%
37
Patents All Time

Issued Patents All Time

Showing 1–25 of 37 patents

Patent #TitleCo-InventorsDate
12313072 Oil-free phase separating compressor 2025-05-27
11635078 Compressor having capacity modulation assembly Roy J. Doepker 2023-04-25
11365735 Internal discharge gas passage for compressor 2022-06-21
11268512 Fluid machine with helically lobed rotors Richard T. Pandzik 2022-03-08
11149732 Opposed screw compressor having non-interference system 2021-10-19
10954943 Compressor comprising a variable volume index valve 2021-03-23
10954940 Compressor having capacity modulation assembly Roy J. Doepker 2021-03-23
10605243 Scroll compressor with oil management system Roy J. Doepker, Guangyong Zhou, Qingfeng Sun, Hongfei Shu 2020-03-31
10288070 Screw compressor with oil shutoff and method Yifan Qiu 2019-05-14
10036388 Scroll compressor with oil management system Roy J. Doepker, Guangyong Zhou, Qingfeng Sun, Hongfei Shu 2018-07-31
9879674 Compressor having capacity modulation assembly Roy J. Doepker 2018-01-30
9458847 Scroll compressor having biasing system Kirill M. Ignatiev, James F. Fogt 2016-10-04
9303642 Compressor having capacity modulation assembly Roy J. Doepker 2016-04-05
9267501 Compressor including biasing passage located relative to bypass porting 2016-02-23
8857200 Compressor having capacity modulation or fluid injection systems Robert C. Stover, Michael M. Perevozchikov 2014-10-14
8790098 Compressor having output adjustment assembly Robert C. Stover, Michael M. Perevozchikov 2014-07-29
8628316 Compressor having capacity modulation system Robert C. Stover 2014-01-14
8616014 Compressor having capacity modulation or fluid injection systems Robert C. Stover, Michael M. Perevozchikov 2013-12-31
8585382 Compressor having capacity modulation assembly Roy J. Doepker 2013-11-19
8568118 Compressor having piston assembly Robert C. Stover, Michael M. Perevozchikov 2013-10-29
8529232 Compressor having capacity modulation system Robert C. Stover, Michael M. Perevozchikov 2013-09-10
8517704 Compressor having capacity modulation system Robert C. Stover 2013-08-27
8506271 Scroll machine having axially biased scroll Stephen M. Seibel, Robert C. Stover 2013-08-13
8313318 Compressor having capacity modulation system Robert C. Stover 2012-11-20
8307663 Vapor compression circuit and method including a thermoelectric device Kirill M. Ignatiev, Nagaraj Jayanth, Hung M. Pham, Jean-Luc M. Caillat 2012-11-13