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 name Mitsui Kinzoku Company Limited as their current owner, 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. 2012 to 2036.
US 9,108,187
Fe(II)-SUBSTITUTED BETA TYPE ZEOLITE, GAS ADSORBENT CONTAINING SAME AND METHOD FOR PRODUCING SAME, AND METHOD FOR REMOVING NITROGEN MONOXIDE AND HYDROCARBON
Jun 1, 2032
US 9,238,219
Zeolite, Manufacturing Method of the Same, and Catalytic Cracking Batalyst of Paraffin
Nov 22, 2032
US 9,895,683
Zeolite, Manufacturing Method of the Same, and Catalytic Cracking Catalyst of Paraffin
Nov 22, 2032
20172022202720322036
A dotted end marks a recorded terminal disclaimer this site has not resolved: the term can only be shorter than the bar, never longer.
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 no later than Jan 2034 · Medium confidence
Cited by 13 later US patents, top 25% of utility patents granted in 2017 in our data, and renewed at every maintenance window due so far. Protection runs to 2034. A terminal disclaimer is on file and its reference is not resolved, so no cap is applied and the date may move earlier, never later.
now held by Mitsui Kinzoku Company, Limited
Also notable
Ends Nov 2032 · High confidence
Granted 2016 and renewed at every maintenance window due so far. Protection runs to 2032.
now held by Mitsui Kinzoku Company, Limited
Also notable
Ends Jul 2030 · High confidence
Renewed at every maintenance window since the 2012 grant; no more fees are due before its term ends in 2030.
now held by Mitsui Kinzoku Company, Limited
Fee deadlines
No maintenance fee falls due on this company's record before Nov 10, 2027.
Recent changes
- 1 term has ended since Aug 17, 2026
Patents held now
Soonest term end first.
Also on record: 8 patents in force now held by others · 11 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.
1 terminal disclaimer is on file with no resolved reference. No cap is applied and none is guessed