Polyplastics Co., Ltd.
5 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.
Recorded under 6 name spellings.
Recorded as renamed to HPP Holdings Co., Ltd. (2026)
5
Ending by 2030
Dec 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 30, 2026The maintenance fee for Production method of polyacetal resin composition (US 11,661,511) comes due Nov 30, 2026. Unpaid by Jun 1, 2027, it lapses early.
- 1 fee due Jan 2, 2027The maintenance fee for Polybutylene terephthalate resin composition (US 10,336,899) comes due Jan 2, 2027. Unpaid by Jul 2, 2027, it lapses early.
- 1 fee due Apr 24, 2027The maintenance fee for Production method for cyclic olefin copolymer and catalyst composition for copolymerization of norbornene monomer and ethylene (US 11,795,256) comes due Apr 24, 2027. Unpaid by Oct 25, 2027, it lapses early.
- 1 fee due Jun 29, 2027The maintenance fee for Polybutylene terephthalate resin pellets, and production method for said polybutylene terephthalate resin pellets (US 9,221,946) comes due Jun 29, 2027. Unpaid by Dec 29, 2027, it lapses early.
- 1 fee due Jul 7, 2027The maintenance fee for Polybutylene terephthalate resin composition (US 10,526,482) comes due Jul 7, 2027. Unpaid by Jan 7, 2028, it lapses early.
- 2 fees due Aug 2 to 6, 2027 · next Aug 2
- 3 fees due Sep 3 to 19, 2027 · next Sep 3
Recent changes
- 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.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,619,020 | Polyacetal resin composition In force · From the USPTO record | In force | From the USPTO record | |
| US 9,499,682 | Polybutylene terephthalate resin composition and thin molded article In force · From the USPTO record | In force | From the USPTO record | |
| US 8,967,207 | Multi-Layer Cylindrical Molded Article In force · Medium confidence | In force | Medium confidence | |
| US 8,210,213 | Multilayer Tube In force · High confidence | In force | High confidence | |
| US 8,852,707 | Polyarylene sulfide resin composition and insert-molded article In force · From the USPTO record | In force | From the USPTO record | |
| US 8,921,465 | Polybutylene terephthalate resin composition In force · From the USPTO record | In force | From the USPTO record | |
| US 9,790,344 | Polybutylene terephthalate resin composition and pellet thereof In force · From the USPTO record | In force | From the USPTO record | |
| US 8,921,457 | Resin molded body In force · From the USPTO record | In force | From the USPTO record | |
| US 9,249,279 | Fuel resistant resin molded body In force · From the USPTO record | In force | From the USPTO record | |
| US 9,434,839 | Polybutylene terephthalate resin composition and welded body In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 62: 5 patents in force now held by others · 57 lapsed for an unpaid fee · 288 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.
15 pending · 5 abandoned · 39 no status recorded