The Patent Finder
LT

Longyear TM, Inc.

Filings on record here from 2001, where this site's data begins
OverviewNotableFeesChangesFamiliesPatent listSources & methods

4 patents currently held

97 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.
5 more records may belong here and await a decision; they are not counted.

The next term ends in Mar 2041. from the record

Of the 97 now held by other companies, 78 name Boart Longyear Manufacturing and Distribution Inc. as their current owner, and 19 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
Mar 2041
Next term end
4
Patent families

When these terms end

Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
notable patents all others 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: the highest-ranked patents in this portfolio by citations and family size.

Notable patents

Ranked by citations and family size, against patents of the same kind granted the same year. How we rank
Only 1 of the currently held patents qualifies as notable.

Formerly held, still cited

Notable
The most cited patent in this portfolio, cited by 117 later US patents, top 10% of utility patents granted in 2010 in our data. Protection runs to 2027.
Ends Nov 2027 · High confidence
Also notable
Cited by 58 later US patents, top 25% of utility patents granted in 2009 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2027.
Ends Feb 2027 · High confidence
Also notable
Cited by 27 later US patents, top 25% of utility patents granted in 2014 in our data, and renewed at 3 of 3 maintenance windows. Protection runs to 2031. A terminal disclaimer caps this term to an earlier patent's.
Ends Feb 2031 · High confidence

Fee deadlines

No maintenance fee falls due on this company's record before Nov 10, 2027.

Recent changes

  • 2 of the patents on this record were granted since Aug 16, 2026
  • 2 terms have ended since Aug 16, 2026

What they patent

Grouped by real patent family, largest first, labeled by the earliest filing in each. No technology classification is inferred from titles.

Patents held now

Soonest term end first.

Showing 1 to 4 of 4

PatentTitleStatusExpiresConfidence
US 12,435,621Systems and Methods for Measuring Depth Within a Borehole
In force
 · High confidence
In forceHigh confidence
US 12,435,241Systems and Methods for Improved Material Sample Analysis and Quality Control
In force
 · High confidence
In forceHigh confidence
US 12,718,341Systems and Methods for Improved Core Sample Analysis
In force
 · High confidence
In forceHigh confidence
US 12,723,505Apparatus, System, and Methods for Coupling Tools to Drill Rigs
held by Veracio Ltd.
In force
 · High confidence
In forceHigh confidence
Also on record, not counted in the 4: 97 patents in force now held by others · 103 patents ended · 5 applications pending · 34 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.
4 terminal disclaimers are on file with no resolved reference. No cap is applied and none is guessed
1 computed term date comes 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