Inventor
Hachiro Doi
Inventor
Saitama, JP
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A01Dprimary
A01DHarvesting67%
B22DCasting of metals7%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables7%
G02BOptical elements, systems or apparatus7%
H02GInstallation of electric cables or lines, or of combined optical and electric cables or lines7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%
PatentTitleYear
5,331,795'Mowing cutter unit for mower'19945,014,765'Heat retaining method for molten metal supplied into injection sleeve, method of applying heat insulating powder onto an inner surface of the injection sleeve, and device therefor'19914,999,985'Mowing blade unit'19914,890,448'Mowing blade unit'19904,706,446'Lawn mower'19874,520,619'Lawn mower'19854,322,934'Lawn mower'19824,262,475'Method and apparatus for collecting grass clippings'19814,177,963'Cord winding apparatus'19794,126,985'Lawn mower'19784,090,346'Lawn mower construction'19784,027,463'Lawn mower'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1987Patents assigned to FUSO LIGHT ALLOYS CO LTD (8)· patent assignee history
1977–1978Based in Kamifukuoka, JP· patent location history
1979Based in Minamisaitama, JP· patent location history
1981–1991Based in Saitama, JP· patent location history
1990–1994Patents assigned to AHRESTY CORP (4)· patent assignee history
1994Based in Miyashiro, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FUSO LIGHT ALLOYS CO LTD | 8 | 1977–1987 |
| AHRESTY CORP | 4 | 1990–1994 |
Locations
| Location | Patents | Span |
|---|---|---|
| Saitama, JP | 7 | 1981–1991 |
| Kamifukuoka, JP | 3 | 1977–1978 |
| Miyashiro, JP | 1 | 1994 |
| Minamisaitama, JP | 1 | 1979 |