0 patents currently held, every record listed here
8 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 8 US patents in force on its record. from the record
Of the 8 now held by other companies, 7 passed to OKI Electric Industry Co. Ltd. when this company merged into it, and 1 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. 2010 to 2033.
US 8,057,030
Ink Supplying System for Ink Jet Printer, Ink Supplying Method for Ink Jet Printer, and Ink Jet Printer
Dec 27, 2029
20152020202520302033
Every computed term in this portfolio is shown above.Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 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 Jul 2030 · 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 2030.
merged into OKI Data Corporation - now held by OKI Electric Industry Co., Ltd.
Also notable
Ends Dec 2029 · High confidence
Cited by 29 later US patents, top 25% of utility patents granted in 2011 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2029.
merged into OKI Data Corporation - now held by OKI Electric Industry Co., Ltd.
Also notable
Ends Jan 2030 · High confidence
Cited by 25 later US patents, top 25% of utility patents granted in 2011 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2030.
merged into OKI Data Corporation - now held by OKI Electric Industry Co., Ltd.
Fee deadlines
No maintenance fee falls due on this company's record before Nov 10, 2027.
Recent changes
- 2 terms have ended since Aug 17, 2026
Patents held now
Soonest term end first.
Also on record: 8 patents in force now held by others · 42 patents ended · 1 application 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.