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QB

Quantum Biosystems Inc.

First filing 2013
OverviewNotableFeesChangesPatent listSources & methods

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 Osaka University 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. 2015 to 2039.
US 10,202,644 Method and Device for Identifying Nucleotide, and Method and Device for Determining Nucleotide Sequence of Polynucleotide Mar 1, 2031
US 10,876,159 Method and Device for Identifying Nucleotide, and Method and Device for Determining Nucleotide Sequence of Polynucleotide Mar 1, 2031
US 9,194,838 Method and Device for Identifying Nucleotide, and Method and Device for Determining Nucleotide Sequence of Polynucleotide Oct 14, 2032
US 9,535,033 Sample Analysis Method Aug 2, 2033
US 9,644,236 Biomolecule Sequencing Devices, Systems and Methods Sep 17, 2034
US 10,557,167 Biomolecule Sequencing Devices, Systems and Methods Sep 17, 2034
US 9,506,894 Method for Controlling Substance Moving Speed and Apparatus for Controlling the Same Dec 12, 2034
US 12,091,712 Systems and Methods for Measurement and Sequencing of Bio-Molecules Jul 13, 2039
20202025203020352039
1 pending application: 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
Cited by 17 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 2032.
now held by Osaka University
Ends Oct 2032 · High confidence
Also notable
The most cited patent in this portfolio, cited by 18 later US patents, top 25% of utility patents granted in 2017 in our data. Protection runs to 2033.
now held by Osaka University
Ends Aug 2033 · High confidence
Also notable
Granted 2017 and renewed at every maintenance window due so far. Protection runs to 2034.
now held by Osaka University
Ends Sep 2034 · Medium confidence

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: 8 patents in force now held by others · 1 application pending · 7 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.
5 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.
The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited