Inventor
Dung-Chang Yeh
Inventor
New Taipei, TW
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F16Cprimary
F16CShafts16%
H02KDynamo-electric machines16%
B22FWorking metallic powder12%
F04DNon-positive-displacement pumps12%
Y10TTechnical subjects covered by former us classification12%
B21JForging4%
B23KSoldering or unsoldering4%
B23PMetal-working not otherwise provided for4%
C04BLime, magnesia4%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients4%
PatentTitleYear
11,065,687Method for manufacturing metal product with two blanks202110,780,499Powder feed for injection molding process and method for manufacturing porous metal202010,434,571Powder injection molding feedstock and method for manufacturing the same20198,932,014'Fan assembly'20158,297,946'Fan, motor and oil sealing structure thereof'20128,272,784'Sleeve bearing system'20128,251,669'Cooling fan'20127,987,598'Dynamic bearing manufacturing method'20117,712,963'Fan, motor and bearing structure thereof'20107,659,649'Fan and motor thereof'20107,131,182'Method for assembling supporting disk of motor rotor'20066,998,748'Motor rotor and manufacturing method thereof'2006Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2006–2012Patents assigned to DELTA ELECTRONICS INC (6)· patent assignee history
2006–2012Based in Taipei, TW· patent location history
2006Based in Tainan, TW· patent location history
2010–2012Based in Taoyuan County, TW· patent location history
2012–2015Patents assigned to YEH DUNG-CHANG (4)· patent assignee history
2012–2015Patents assigned to FOXCONN TECH CO LTD (3)· patent assignee history
2012–2015Patents assigned to FU ZHUN PRECISION IND SHENZHEN (3)· patent assignee history
2015–2021Based in New Taipei, TW· patent location history
2019–2021Patents assigned to CHAMP TECH OPTICAL FOSHAN CORP (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DELTA ELECTRONICS INC | 6 | 2006–2012 |
| YEH DUNG-CHANGself | 4 | 2012–2015 |
| CHAMP TECH OPTICAL FOSHAN CORP | 3 | 2019–2021 |
| FOXCONN TECH CO LTD | 3 | 2012–2015 |
| FU ZHUN PRECISION IND SHENZHEN | 3 | 2012–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| New Taipei, TW | 4 | 2015–2021 |
| Taoyuan County, TW | 4 | 2010–2012 |
| Taipei, TW | 3 | 2006–2012 |
| Tainan, TW | 1 | 2006 |