Inventor
Hitoshi Yoshioka
Inventor
Kawasaki, JP
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Mprimary
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems20%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1020%
B08BCleaning in general13%
H05BElectric heating13%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry7%
C07CAcyclic or carbocyclic compounds7%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices7%
PatentTitleYear
5,856,259'Preparation process of supported catalyst for the synthesis of methacrolein and methacrylic acid'19995,701,169'Illumination system and exposure apparatus with demountable transparent protective member'19975,288,333'Wafer cleaning method and apparatus therefore'19945,171,949'Switching power supply for microwave oven'19925,158,100'Wafer cleaning method and apparatus therefor'19925,111,372'DC-DC converter'19925,086,381'DC-DC converter'19925,082,998'Switching power supply for microwave oven'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992Patents assigned to YUTAKA ELECTRIC MFG (4)· patent assignee history
1992–1994Patents assigned to DAINIPPON SCREEN MFG (2)· patent assignee history
1992Patents assigned to DENSETSU CORP (2)· patent assignee history
1992Patents assigned to NEMIC LAMBDA KK (2)· patent assignee history
1992Patents assigned to TOKO INC (2)· patent assignee history
1992Based in Kawasaki, JP· patent location history
1992–1994Based in Hikone, JP· patent location history
1997Based in Utsunomiya, JP· patent location history
1999Based in Otake, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| YUTAKA ELECTRIC MFG | 4 | 1992 |
| DAINIPPON SCREEN MFG | 2 | 1992–1994 |
| DENSETSU CORP | 2 | 1992 |
| NEMIC LAMBDA KK | 2 | 1992 |
| TOKO INC | 2 | 1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kawasaki, JP | 4 | 1992 |
| Hikone, JP | 2 | 1992–1994 |
| Otake, JP | 1 | 1999 |
| Utsunomiya, JP | 1 | 1997 |