Inventor

Bumdong Sa

Inventor

Seoul, KR

Overview

12→

Patents

2014–2021

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 12 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F04Cprimary

F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids43%

F01CRotary-piston or oscillating-piston machines or engines29%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%

C22CAlloys4%

F04BPositive-displacement machines for liquids4%

F05CIndexing scheme relating to materials, material properties or material characteristics for machines, engines or pumps other than non-positive-displacement machines or engines4%

F16CShafts4%

F25BRefrigeration machines, plants or systems4%

Y10TTechnical subjects covered by former us classification4%

PatentTitleYear

11,060,521Rotary compressor having a rolling piston with coupling groove2021 11,002,279Rotary compressor2021 10,982,675Rotary compressor with groove for supplying oil2021 10,962,010Compressor2021 10,794,187Rotary compressor with a valve in the vane2020 10,550,885Compressor2020 9,429,156'Compressor'2016 9,394,904'Compressor'2016 9,188,126'Hermatic compressor having a fluid guide disposed in an intermediate chamber'2015 8,936,449'Hermetic compressor and manufacturing method thereof'2015 8,915,725'Compressor in which a shaft center of a suction pipe is disposed to not correspond to a shaft center of a refrigerant suction passage of a stationary shaft and an upper end of the stationary shaft protrudes higher than a bottom of an accumulator chamber'2014 8,899,947'Compressor'2014

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2014–2021Patents assigned to LG ELECTRONICS INC (12)· patent assignee history

2014–2015Patents assigned to LEE KANGWOOK (3)· patent assignee history

2014–2015Patents assigned to SA BUMDONG (3)· patent assignee history

2014–2021Based in Seoul, KR· patent location history

2020Patents assigned to SEOUL NAT UNIV R&DB FOUNDATION (1)· patent assignee history

2020Patents assigned to SEOUL NATIONAL UNIV R&D FOUNDATION (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
LG ELECTRONICS INC	12	2014–2021
LEE KANGWOOK	3	2014–2015
SA BUMDONGself	3	2014–2015
SEOUL NAT UNIV R&DB FOUNDATION	1	2020
SEOUL NATIONAL UNIV R&D FOUNDATION	1	2020

Locations

Location	Patents	Span
Seoul, KR	12	2014–2021