The Patent Finder

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20 patents currently held · Updated Nov 14, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Recorded under 2 name spellings.

1
Ending by 2030
Aug 2029
Next term end

When these terms end

Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
  • 2 fees due Jan 4 to 7, 2027 · next Jan 4
  • 1 fee due Mar 3, 2027
    The maintenance fee for Eccentric compensating torsional drive system (US 10,400,771) comes due Mar 3, 2027. Unpaid by Sep 3, 2027, it lapses early.
  • 1 fee due Jun 30, 2027
    The maintenance fee for Compact energy cycle construction utilizing some combination of a scroll type expander, pump, and compressor for operating according to a rankine, an organic rankine, heat pump or combined organic rankine and heat pump cycle (US 10,519,815) comes due Jun 30, 2027. Unpaid by Jan 3, 2028, it lapses early.
  • 1 fee due Jul 30, 2027
    The maintenance fee for Scroll device with an integrated cooling loop (US 11,885,328) comes due Jul 30, 2027. Unpaid by Jan 31, 2028, it lapses early.
  • 1 fee due Aug 13, 2027
    The maintenance fee for Liquid cooling of a scroll type compressor with liquid supply through the crankshaft (US 11,898,557) comes due Aug 13, 2027. Unpaid by Feb 14, 2028, it lapses early.
  • 1 fee due Sep 19, 2027
    The maintenance fee for Dual drive co-rotating spinning scroll compressor or expander (US 11,933,299) comes due Sep 19, 2027. Unpaid by Mar 20, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

  • 1 of the patents on this record was granted since Aug 16, 2026

Patents held now

Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
PatentTitleStatus Expires Confidence
US 7,942,655Advanced scroll compressor, vacuum pump, and expander
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,668,479Semi-hermetic scroll compressors, vacuum pumps, and expanders
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,523,544Three stage scroll vacuum pump
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,519,815Compact energy cycle construction utilizing some combination of a scroll type expander, pump, and compressor for operating according to a rankine, an organic rankine, heat pump or combined organic rankine and heat pump cycle
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,784,139Compact energy cycle construction utilizing some combination of a scroll type expander, pump, and compressor for operating according to a rankine, an organic rankine, heat pump, or combined organic rankine and heat pump cycle
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,074,598Scroll type device including compressor and expander functions in a single scroll plate pair
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,774,690Compact energy cycle construction utilizing some combination of a scroll type expander, pump, and compressor for operating according to a rankine, an organic rankine, heat pump, or combined organic rankine and heat pump cycle
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,400,771Eccentric compensating torsional drive system
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,692,550Scroll type device having liquid cooling through idler shafts
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,865,793Scroll type device having liquid cooling through idler shafts
In force
 · From the USPTO record
In forceFrom the USPTO record
10 of 20 patents shown.
Pro members see all 20.
Pro members: see all 20 patents
Also on record, not counted in the 20: 3 lapsed for an unpaid fee · 12 ended at full term. List them

Sources and methods

Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

Published applications

US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.

2 pending · 3 no status recorded

List them

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