PolyPlus Battery Company
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 2 name spellings.
7
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 Mar 5, 2027The maintenance fee for Methods of Making Lithium Ion Conducting Sulfide Glass (US 11,749,834) comes due Mar 5, 2027. Unpaid by Sep 7, 2027, it lapses early.
- 1 fee due May 14, 2027The maintenance fee for Treating sulfide glass surfaces and making solid state laminate electrode assemblies (US 11,817,569) comes due May 14, 2027. Unpaid by Nov 15, 2027, it lapses early.
- 1 fee due Jul 16, 2027The maintenance fee for Methods and Materials for Protection of Sulfide Glass Solid Electrolytes (US 11,876,174) comes due Jul 16, 2027. Unpaid by Jan 18, 2028, it lapses early.
- 2 fees due Sep 15 to 24, 2027 · next Sep 15
- 1 fee due Oct 21, 2027The maintenance fee for Encapsulated Sulfide Glass Solid Electrolytes and Solid-State Laminate Electrode Assemblies (US 10,629,950) comes due Oct 21, 2027. Unpaid by Apr 21, 2028, it lapses early.
- 1 fee due Nov 14, 2027The maintenance fee for Lithium Ion Conducting Sulfide Glass Fabrication (US 11,984,553) comes due Nov 14, 2027. Unpaid by May 15, 2028, it lapses early.
Recent changes
- 2 of the patents on this record were granted since Aug 17, 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.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,130,198 | Compliant seal structures for protected active metal anodes In force · From the USPTO record | In force | From the USPTO record | |
| US 8,404,388 | Compliant seal structures for protected active metal anodes In force · From the USPTO record | In force | From the USPTO record | |
| US 9,287,573 | Lithium Battery Cell with Protective Membrane Having a Garnet Like Structure In force · Medium confidence | In force | Medium confidence | |
| US 8,048,570 | Compliant seal structures for protected active metal anodes In force · From the USPTO record | In force | From the USPTO record | |
| US 8,658,304 | Catholytes for aqueous lithium/air battery cells In force · From the USPTO record | In force | From the USPTO record | |
| US 7,824,806 | Compliant seal structures for protected active metal anodes In force · From the USPTO record | In force | From the USPTO record | |
| US 8,129,052 | Polymer adhesive seals for protected anode architectures In force · From the USPTO record | In force | From the USPTO record | |
| US 8,182,943 | Composite solid electrolyte for protection of active metal anodes In force · From the USPTO record | In force | From the USPTO record | |
| US 8,323,820 | Catholytes for aqueous lithium/air battery cells In force · From the USPTO record | In force | From the USPTO record | |
| US 8,389,147 | Hydrogels for aqueous lithium/air battery cells In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 50: 30 lapsed for an unpaid fee · 48 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.
11 pending · 26 abandoned · 23 no status recorded