Hitachi Tool Engineering, Ltd.

9 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.

Recorded under 3 name spellings.

Recorded as renamed to Mitsubishi Hitachi Tool Engineering, Ltd. (2015)

Ending by 2030

Sep 2028

Next term end

When these terms end

5 yrs10 yrs20 yrs

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 Jul 5, 2027
The maintenance fee for Hard-coated member and its production method, and indexable rotary tool comprising it (US 9,228,258) comes due Jul 5, 2027. Unpaid by Jan 5, 2028, it lapses early.

Which patents, and when each one lapses · Pro

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.

Showing 1 to 9 of 9

Patent	Title	Status	Expires	Confidence
US 8,304,098	Hard-coated member, and its production method In force Term ends Sep 23, 2028 · From the USPTO record	In force	Term ends Sep 23, 2028	From the USPTO record
US 9,228,258	Hard-coated member and its production method, and indexable rotary tool comprising it In force Term ends Jul 10, 2032 · From the USPTO record	In force	Term ends Jul 10, 2032	From the USPTO record
US 9,492,872	Surface-modified, WC-based cemented carbide member, hard-coated, WC-based cemented carbide member, and their production methods In force Term ends Aug 19, 2032 · From the USPTO record	In force	Term ends Aug 19, 2032	From the USPTO record
US 9,579,734	Multi-flute endmill In force Term ends Oct 1, 2032 · From the USPTO record	In force	Term ends Oct 1, 2032	From the USPTO record
US 9,421,624	End mill for cutting of high-hardness materials In force Term ends Oct 4, 2032 · From the USPTO record	In force	Term ends Oct 4, 2032	From the USPTO record
US 9,527,141	Negative cutting insert, and indexable rotary cutting tool, indexable rotary cutting tool system and cutting method using such cutting insert In force Term ends Jun 21, 2033 · From the USPTO record	In force	Term ends Jun 21, 2033	From the USPTO record
US 9,534,292	Hard-coated tool and its production method In force Term ends Sep 30, 2033 · From the USPTO record	In force	Term ends Sep 30, 2033	From the USPTO record
US 9,868,161	Ball-end mill and insert In force Term ends Jul 11, 2034 · From the USPTO record	In force	Term ends Jul 11, 2034	From the USPTO record
US 7,537,822	Hard-coated member In force Term ended Oct 22, 2026 · From the USPTO record	In force	Term ended Oct 22, 2026	From the USPTO record

Also on record, not counted in the 9: 4 patents in force now held by others · 9 lapsed for an unpaid fee · 17 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.

Export every term end as CSV · Pro

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 abandoned

List them