The Patent Finder

Bal Seal Engineering, LLC

84 patents currently held · Updated Nov 14, 2026
1 more in force is now held by another company
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Recorded under 4 name spellings.

25
Ending by 2030
Aug 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 Dec 20, 2026
    The maintenance fee for Seal assemblies and related methods (US 11,680,642) comes due Dec 20, 2026. Unpaid by Jun 21, 2027, it lapses early.
  • 2 fees due Jan 9 to 23, 2027 · next Jan 9
  • 1 fee due Mar 5, 2027
    The maintenance fee for Lip Seals and Related Methods (US 11,746,906) comes due Mar 5, 2027. Unpaid by Sep 7, 2027, it lapses early.
  • 1 fee due Apr 15, 2027
    The maintenance fee for Spring connectors with adjustable grooves and related methods (US 10,447,000) comes due Apr 15, 2027. Unpaid by Oct 15, 2027, it lapses early.
  • 1 fee due May 24, 2027
    The maintenance fee for Elastic seals with dynamic lips and related methods (US 9,194,497) comes due May 24, 2027. Unpaid by Nov 24, 2027, it lapses early.
  • 3 fees due Jun 30, 2027
  • 2 fees due Jul 12 to 14, 2027 · next Jul 12
  • 7 fees due Sep 1 to 26, 2027 · next Sep 1
  • 1 fee due Oct 12, 2027
    The maintenance fee for Locking connectors and related methods (US 9,312,630) comes due Oct 12, 2027. Unpaid by Apr 12, 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
  • 2 terms have ended 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 7,890,175Connector assembly for use with medical devices
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,538,289Multiple position swivel lamp with integral switch contacts
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,769,459Pigtail spring contacts for implanted medical devices
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,722,415In-line connector
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,955,145In-line connector
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,822,477Connector assembly for use with medical devices
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,480,437Connector cartridge stack for electrical transmission
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,215,013Method for making a free standing axially compressed connector stack
In force
 · From the USPTO record
In forceFrom the USPTO record
US 7,914,351Electrical connectors with improved electrical contact performance
In force
 · From the USPTO record
In forceFrom the USPTO record
US 8,491,345Electrical contact assemblies with axially canted coil springs
In force
 · From the USPTO record
In forceFrom the USPTO record
10 of 84 patents shown.
Pro members see all 84.
Pro members: see all 84 patents
Also on record, not counted in the 84: 1 patent in force now held by others · 19 lapsed for an unpaid fee · 64 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.

3 pending · 7 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