The Patent Finder
US

Electroactive Polymer Actuated Motors

US 7,750,532 Term ended
OverviewFamilyAssignmentsSources & methods

Term ended Mar 21, 2025 · High confidence

Filed Feb 24, 2006 as application 11/361,683 · Granted Jul 6, 2010
Base term, 20 years from filing
Today
20 years from filing
Term ended Mar 21, 2025
2005 2026
Clock starts
Mar 21, 2005
Term ended
Mar 21, 2025
Granted
Jul 6, 2010
base term after the term ends fee events 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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
20
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

This patent's term is its 20-year base term, with no adjustment for prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. Confidence: High. from the record

How we calculated this date

One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Mar 21, 2005, when applications 11/085,798 and 11/085,804, the earliest non-provisional applications in its chain, were filed (this one was filed Feb 24, 2006)Mar 21, 2025High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidterm endedHigh confidence
Computed term endThe steps above, in orderMar 21, 2025High confidence

This family

US 7,595,580In force
Apr 2027
Apr 2027
US 7,521,840Term ended
Apr 2026
Apr 2026
Application 11/361,703Abandoned
not computed
not computed
US 7,626,319Term ended
Mar 2025
Mar 2025
US 7,915,789Term ended
Aug 2025
Aug 2025
US 7,750,532this patent
Mar 2025
Mar 2025
Application PCT/US2006/010120PCT application
no patent term
no patent term
Application PCT/US2006/010369PCT application
no patent term
no patent term
8 of 20 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.

Assignments

Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
RecordedAssignorAssigneeConveyance
Jun 27, 2006
Reel 17852, frame 659
Heim, Jonathan R.Artificial Muscle, Inc.Assignment of Assignor's Interest
May 20, 2010
Reel 24411, frame 308
Artificial Muscle, Inc.Bayer MaterialScience AGAssignment of Assignor's Interest

Sources

Google Patents · The patent document at USPTO · Assignment records at USPTO

USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup

Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.

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