HITACHI TOOL ENGINEERING, LTD.
28Patents
14Active
28Granted
38Portfolio score
Filing activity: Sep 11, 1991 → Sep 30, 2013 · 6 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6586122B2 | Multilayer-coated cutting tool | Emerging Cross-Sectional Technologies | 62 | Expired |
| US6333103A | Aluminum oxide-coated article | Emerging Cross-Sectional Technologies | 46 | Expired |
| US7166155B2 | Hard film and hard film-coated tool | Emerging Cross-Sectional Technologies | 41 | Expired |
| US6254984A | Members with multi-layer coatings | Emerging Cross-Sectional Technologies | 32 | Expired |
| US6846135B2 | Radius end mill having radius edge enhanced in resistance to chipping and fracture | Emerging Cross-Sectional Technologies | 29 | Expired |
| US6884006B2 | Insert-exchangeable, rotary tool and throwaway insert | Emerging Cross-Sectional Technologies | 26 | Expired |
| US7537822B2 | Hard-coated member | Emerging Cross-Sectional Technologies | 22 | Active |
| US5322394A | Highly stiff end mill | Emerging Cross-Sectional Technologies | 21 | Expired |
| US7661912B2 | Tool having damper | Emerging Cross-Sectional Technologies | 13 | Active |
| US5149595A | Cermet alloy and process for its production | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6790543B2 | Hard layer-coated tool | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6413023B1 | Indexable type rotary milling tool and indexable insert | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5248352A | TiC-base cermet alloy | Chemistry; Metallurgy | 7 | Expired |
| US8304098B2 | Hard-coated member, and its production method | Emerging Cross-Sectional Technologies | 6 | Active |
| US7909549B2 | Small-diameter deep hole drill and a micro deep hole drilling method | Emerging Cross-Sectional Technologies | 6 | Active |
| US7354640B2 | Hard coating and its production method | Emerging Cross-Sectional Technologies | 4 | Expired |
| US9527141B2 | Negative cutting insert, and indexable rotary cutting tool, indexable rotary cutting tool system and cutting method using such cutting insert | Emerging Cross-Sectional Technologies | 4 | Active |
| US9868162B2 | Machining head, holder and exchangeable tip cutting tool | Emerging Cross-Sectional Technologies | 3 | Active |
| US7368182B2 | Hard coating and its formation method, and hard-coated tool | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6387552B1 | TiCN-based cermet | Emerging Cross-Sectional Technologies | 2 | Expired |
| US9228258B2 | Hard-coated member and its production method, and indexable rotary tool comprising it | Emerging Cross-Sectional Technologies | 2 | Active |
| US9534292B2 | Hard-coated tool and its production method | Emerging Cross-Sectional Technologies | 1 | Active |
| US8827600B2 | Carbide end mill and cutting method using the end mill | Emerging Cross-Sectional Technologies | 1 | Active |
| US8585329B2 | Ball end mill | Emerging Cross-Sectional Technologies | 0 | Active |
| US9492872B2 | Surface-modified, WC-based cemented carbide member, hard-coated, WC-based cemented carbide member, and their production methods | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.