PROTEC CO., LTD.
50Patents
40Active
50Granted
56Portfolio score
Filing activity: Feb 25, 1981 → Sep 20, 2023 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4741611A | Eyeglasses adapted for sports and protective use | Physics | 156 | Expired |
| USD270165S | Eyeglasses | General | 77 | Expired |
| US4686912A | Electrically controlled locking apparatus and safe utilizing same | Fixed Constructions | 22 | Expired |
| US4671086A | Redundant electrically controlled locking apparatus | Emerging Cross-Sectional Technologies | 21 | Expired |
| US8524242B2 | Soluble aggregate, immune tolerance inducer and manufacturing method thereof | Human Necessities | 15 | Active |
| USD274583S | Hanging planter | General | 13 | Expired |
| US6750121B1 | Apparatus and method for forming single crystalline nitride substrate using hydride vapor phase epitaxy and laser beam | Electricity | 12 | Expired |
| US5860371A | Security window adapted to prevent forced entry | Fixed Constructions | 8 | Expired |
| US9429368B2 | Temperature-sensing piezoelectric dispenser | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US5636579A | Security window adapted to prevent forced entry | Fixed Constructions | 6 | Expired |
| US10497665B2 | Apparatus for laser bonding of flip chip and method for laser bonding of flip chip | Electricity | 6 | Active |
| US6877541B2 | Tape feeder for chip mounters | Emerging Cross-Sectional Technologies | 5 | Expired |
| US10328449B2 | Piezoelectric dispenser and method of calibrating stroke of the same | Performing Operations; Transporting | 2 | Active |
| US9443188B2 | Operation number-counting piezoelectric dispenser | Electricity | 2 | Active |
| US10804239B2 | Apparatus for mounting conductive ball | Electricity | 1 | Active |
| US9573157B2 | Piezo-pneumatic valve driving type dispensing pump and method of dispensing viscous liquid by using the pump | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US9613913B2 | Method of forming electromagnetic interference shielding layer of ball grid array semiconductor package and base tape for the method | Electricity | 1 | Active |
| US10483228B2 | Apparatus for bonding semiconductor chip and method for bonding semiconductor chip | Electricity | 1 | Active |
| US10384229B2 | Apparatus and method for dispensing adhesive liquid for dust trap | Performing Operations; Transporting | 1 | Active |
| US11420219B2 | Printing apparatus for printed electronics | Electricity | 1 | Active |
| US8080192B2 | Volume-based dispensing control method | Electricity | 1 | Active |
| USD311698S | In-circuit tester console | General | 1 | Expired |
| US10804240B2 | Method of mounting conductive ball | Electricity | 0 | Active |
| US10779658B1 | Mattress top for innerspring mattress | Human Necessities | 0 | Active |
| US10542825B1 | Multi-zone mattress | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.