Inventor
Yoshiko Fujita
Inventor
Tokyo, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Fprimary
C09FNatural resins17%
C12QMeasuring or testing processes involving enzymes, nucleic acids or microorganisms17%
G01NInvestigating or analysing materials by determining their chemical or physical properties17%
B41MPrinting, duplicating, marking, or copying processes8%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds8%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices8%
H01JElectric discharge tubes or discharge lamps8%
H05KPrinted circuits8%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
PatentTitleYear
5,992,320'Transfer sheet, and pattern-forming method'19995,621,072'Purified guaiacum resin and method for making same'19975,219,700'Photosensitive composition containing 1,2-naphthoquinone-2-diazido-4-sulfonic acid ester, alkali-soluble resin, halomethyloxadiazole compound and a dye'19935,093,082'Purified guaiacum resin and method for making the same'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–1999Patents assigned to DAINIPPON PRINTING CO LTD (3)· patent assignee history
1992–1999Based in Tokyo, JP· patent location history
1993Patents assigned to KONISHIROKU PHOTO IND (1)· patent assignee history
1993Patents assigned to MITSUBISHI CHEM IND (1)· patent assignee history
1993Based in Nagoya, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DAINIPPON PRINTING CO LTD | 3 | 1992–1999 |
| KONISHIROKU PHOTO IND | 1 | 1993 |
| MITSUBISHI CHEM IND | 1 | 1993 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 3 | 1992–1999 |
| Nagoya, JP | 1 | 1993 |