0 patents currently held, every record listed here
9 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
This portfolio holds none of the 9 US patents in force on its record. from the record
Of the 9 now held by other companies, 5 name Hitachi Metals Ltd. as their current owner, and 4 more name another party. Each row says which.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
0
Ending by 2030
none
Next term end
When these terms end
Each bar runs from grant to computed term end. 2009 to 2034.
US 7,568,959
Connecting Lead Wire for a Solar Battery, Method for Fabricating Same, and Solar Battery Using the Connecting Lead Wire
Sep 12, 2027
US 9,279,176
Lead Wire for Solar Cell, Manufacturing Method and Storage Method Thereof, and Solar Cell
Jan 4, 2030
US 8,143,525
Solar Cell Lead Wire and Production Method Therefor and Solar Cell Using Same
Mar 26, 2030
US 9,225,217
Electric Power Collection and Distribution Ring, Electric Motor and Method of Manufacturing Electric Motor
Feb 21, 2034
20142019202420292034
Every computed term in this portfolio is shown above.Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
Notable patents
Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
None of the currently held patents qualifies as notable.
Formerly held, still cited
Notable
Ends May 2031 · High confidence
The most cited patent in this portfolio, cited by 48 later US patents, top 25% of utility patents granted in 2012 in our data. Protection runs to 2031.
now held by Hitachi Metals Ltd.
Also notable
Ends Feb 2034 · High confidence
Cited by 25 later US patents, top 25% of utility patents granted in 2015 in our data, and renewed at every maintenance window due so far. Protection runs to 2034.
now held by Hitachi Metals Ltd.
Also notable
Ends Jan 2030 · High confidence
Granted 2016 and renewed at every maintenance window due so far. Protection runs to 2030.
now held by Proterial, Ltd.
Fee deadlines
No maintenance fee falls due on this company's record before Nov 10, 2027.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
Patents held now
Soonest term end first.
Also on record: 9 patents in force now held by others · 18 patents ended · 8 applications abandoned. List them
Sources and methods
Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built
Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.