Inventor
Kazuaki Yokoyama
Inventor
Saitama, JP
Overview
Patents· 24 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus41%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%
G09FDisplaying10%
A21DTreatment of flour or dough for baking, e.g. by addition of materials7%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein7%
F21VFunctional features or details of lighting devices or systems thereof5%
H01RElectrically-conductive connections5%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for2%
F04BPositive-displacement machines for liquids2%
G01DMeasuring not specially adapted for a specific variable2%
PatentTitleYear
8,087,903'Hydraulic rotary machine'20126,152,570'Surface light source device'20006,022,247'Electric wiring block'20005,988,826'Surface light source device'19995,971,559'Surface light source device'19995,899,552'Surface light source device'19995,823,819'Electric junction box'19985,818,555'Surface light source device'19985,810,464'Surface light source device of side light type'19985,779,338'Surface light source device'19985,769,522'Surface light source device'19985,718,497'Surface light source device'19985,655,827'Surface light source device'19975,600,455'Prismatic member with coarsened portions or triangular prismatic and semi-circular prismatic members arranged on a flat light emitting surface'19975,584,556'Surface light source device'19965,575,549'Surface light source device'19965,569,882'Waterproof protective cover'19965,450,292'Surface light source device'19955,414,599'Surface light source device'19955,402,324'Surface illuminant device'19955,196,215'Cavity forming agent for edible foods'19935,192,568'Cavity forming agent for edible foods'19935,134,549'Surface light source device'19924,798,733'Yeast-fermented food modifier'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–2000Patents assigned to ENPLAS CORP (17)· patent assignee history
1992–1998Based in Saitama, JP· patent location history
1993Patents assigned to MYOSHI OIL & FAT CO LTD (2)· patent assignee history
1993Based in Chiba, JP· patent location history
1995–1998Based in Kawaguchi, JP· patent location history
1996–2000Patents assigned to YAZAKI CORP (3)· patent assignee history
1996–2000Based in Ageo, JP· patent location history
1996–2000Based in Shizuoka, JP· patent location history
1998–2000Patents assigned to KOIKE YASUHIRO (3)· patent assignee history
2012Patents assigned to HITACHI CONSTRUCTION MACHINERY (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ENPLAS CORP | 17 | 1992–2000 |
| KOIKE YASUHIRO | 3 | 1998–2000 |
| YAZAKI CORP | 3 | 1996–2000 |
| MYOSHI OIL & FAT CO LTD | 2 | 1993 |
| HITACHI CONSTRUCTION MACHINERY | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Saitama, JP | 8 | 1992–1998 |
| Ageo, JP | 7 | 1996–2000 |
| Shizuoka, JP | 3 | 1996–2000 |
| Kawaguchi, JP | 2 | 1995–1998 |
| Chiba, JP | 2 | 1993 |