The Patent Finder

Ets-Lindgren Inc.

46 patents currently held · Updated Nov 14, 2026
2 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.
10
Ending by 2030
Mar 2027
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.
  • 1 fee due Nov 28, 2026
    The maintenance fee for System and Method for Over-The-Air Testing of Milli-Meter Wave and Other Beamforming Technologies (US 10,306,494) comes due Nov 28, 2026. Unpaid by May 28, 2027, it lapses early.
  • 2 fees due Dec 13 to 25, 2026 · next Dec 13
  • 2 fees due Feb 11 to 13, 2027 · next Feb 11
  • 1 fee due Mar 22, 2027
    The maintenance fee for Multiseal Door, Method for Sealing an Enclosure (US 9,140,055) comes due Mar 22, 2027. Unpaid by Sep 22, 2027, it lapses early.
  • 2 fees due May 5 to 19, 2027 · next May 5
  • 1 fee due Jul 21, 2027
    The maintenance fee for System and Method for Power Control of an Over-The-Air RF Environment Emulator (US 10,542,498) comes due Jul 21, 2027. Unpaid by Jan 21, 2028, it lapses early.
  • 1 fee due Aug 16, 2027
    The maintenance fee for Fluid Conduit Through RF Shield (US 9,265,184) comes due Aug 16, 2027. Unpaid by Feb 16, 2028, it lapses early.
  • 2 fees due Sep 3 to 17, 2027 · next Sep 3
  • 1 fee due Oct 26, 2027
    The maintenance fee for Methods and Apparatus for Evaluating Radiated Performance of MIMO Wireless Devices in Three Dimensions (US 9,322,864) comes due Oct 26, 2027. Unpaid by Apr 26, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

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 7,388,555Adjustable-Frequency Two-Element Bowtie Antenna
In force
 · High confidence
In forceHigh confidence
US 7,463,211Adjustable Antenna Element and Antennas Employing Same
In force
 · High confidence
In forceHigh confidence
US 9,179,340Systems and methods for over-the-air testing of wireless systems
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,655,284Systems and methods for over-the-air testing of wireless systems
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,610,810Methods for Producing Acoustic Sources
In force
 · High confidence
In forceHigh confidence
US 8,326,229Systems and methods for over-the-air testing of wireless systems
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,331,869Systems and Methods for Over the Air Performance Testing of Wireless Devices with Multiple Antennas
In force
 · High confidence
In forceHigh confidence
US 8,330,640Termination of edges of a parabolic reflector in a compact range
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,965,986Systems and methods for over-the-air testing of wireless systems
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,140,055Multiseal Door, Method for Sealing an Enclosure
In force
 · High confidence
In forceHigh confidence
10 of 46 patents shown.
Pro members see all 46.
Pro members: see all 46 patents
Also on record, not counted in the 46: 2 patents in force now held by others · 1 lapsed for an unpaid fee · 13 ended at full term · 1 surrendered on reissue. 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.

1 pending · 1 abandoned · 2 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