How many patents does
Yamamoto Kogaku Company have?
patents
291
families
88
granted
95
applications
196
JP
69
US
64
CN
40
EP
36
KR
33
WO
5
RoW
44
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The report contains ten-year analysis with the following sections
- patent filing analysis
- worldwide filing analysis
- patent family analysis
- application analysis
- granted analysis
- classification analysis
- citation analysis
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Yamamoto Kogaku Company
Top ten assignees appearing on patents
2009 - 2018
| yamamoto kogaku company | 224 |
| kowa company | 15 |
| wins japan company | 4 |
| nalux company | 1 |
| admo | 1 |
| kaneka corporation | 1 |
| shirafuji fumiaki | 1 |
| yamamoto kagaku | 1 |
| goldwin | 1 |
| sharp corporation | 1 |
Yamamoto Kogaku Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| glasses | 13 | 2009 |
| swimming goggles | 12 | 2009 |
| synthetic resin lens | 11 | 2011 |
| belt length adjuster | 11 | 2010 |
| circularly polarizing plate, circularly polarizing lens, and circularly polarizing glass… 🛈 | 10 | 2010 |
| fog-resistant structure and protective device for eyes | 10 | 2009 |
| goggles | 9 | 2009 |
| eyeglasses | 9 | 2009 |
| eyeglasses | 8 | 2008 |
| eyewear mounting device | 8 | 2010 |