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, 9 name Lam Research Corporation as their current owner. Each row says so.
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 2042.
US 9,903,750
Method and Device for Determining Information Relating to the Mass of a Semiconductor Wafer
Aug 21, 2034
US 12,288,702
Semiconductor Wafer Mass Metrology Apparatus and Semiconductor Wafer Mass Metrology Method
Jun 28, 2042
US 12,546,646
Method and Apparatus for Controlling the Temperature of a Semiconductor Wafer
Oct 9, 2042
20182024203020362042
9 pending applications: term is not computable until grant.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 Nov 2034 · High confidence
Granted 2017 and renewed at every maintenance window due so far. Protection runs to 2034.
now held by Lam Research Corporation
Also notable
Ends Jan 2030 · High confidence
Renewed at every maintenance window since the 2013 grant; no more fees are due before its term ends in 2030.
now held by Lam Research Corporation
Also notable
Ends Jan 2029 · Medium confidence
Granted 2016 and renewed at every maintenance window due so far. Protection runs to 2029.
now held by Lam Research Corporation
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 · 2 patents ended · 9 applications pending. 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.
4 computed term dates come from a chain with an unresolved parent. A continuity parent has not yet been fetched from USPTO's records. The term is dated from this application's own claim; no earlier date is assumed until the parent is resolved.