The Patent Finder

Guild Associates Inc.

12 patents currently held · Updated Nov 14, 2026
4 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.
2
Ending by 2030
Aug 2030
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 Jun 15, 2027
    The maintenance fee for Biological detection system and method (US 9,212,383) comes due Jun 15, 2027. Unpaid by Dec 15, 2027, it lapses early.
  • 1 fee due Oct 21, 2027
    The maintenance fee for Porous mixed metal oxy-hydroxides and method of preparation (US 10,625,239) comes due Oct 21, 2027. Unpaid by Apr 21, 2028, it lapses early.
  • 2 fees due Nov 5 to 7, 2027 · next Nov 5

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 8,158,378Utilizing waste tail gas from a separation unit biogas upgrade systems as beneficial fuel
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,212,383Biological detection system and method
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,944,920Biodegradable immobilized enzymes and methods of making the same
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,232,311Removal of Hydrogen Sulfide from Process Streams
In force
 · High confidence
In forceHigh confidence
US 10,639,582Removal of hydrogen sulfide from process streams
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,934,177Process for purification of contaminated water
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,625,239Porous mixed metal oxy-hydroxides and method of preparation
In force
 · From the USPTO record
In forceFrom the USPTO record
US 9,999,853Processes For Filtering Chemicals From Air Streams
In force (reinstated)
 · High confidence
In force (reinstated)High confidence
US 11,305,019Functionalized nucleic acid nanostructures for RNA delivery
In force
 · From the USPTO record
In forceFrom the USPTO record
US 10,828,873Textile Composite Having Sorptive and Reactive Properties Against Toxic Agents
In force
 · High confidence
In forceHigh confidence
10 of 12 patents shown.
Pro members see all 12.
Pro members: see all 12 patents
Also on record, not counted in the 12: 4 patents in force now held by others · 21 lapsed for an unpaid fee · 8 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.

4 pending · 3 abandoned · 8 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