ISHIZUKA GLASS CO., LTD.
9Patents
2Active
9Granted
33Portfolio score
Filing activity: Dec 10, 1979 → Feb 28, 2013 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4347072A | Method and device for reducing NO.sub.x generated in glass-melting furnace | Emerging Cross-Sectional Technologies | 28 | Expired |
| USD289356S | Tumbler | General | 25 | Expired |
| USD697761S1 | Bowl for table | General | 19 | Active |
| US5266093A | Glass bottle forming machine | Emerging Cross-Sectional Technologies | 18 | Expired |
| USD697760S1 | Bowl for table | General | 16 | Active |
| US5693110A | Processes for controlling of the temperature of glass inside forehearth | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6527628B2 | Method for producing frost glass product | Performing Operations; Transporting | 5 | Expired |
| US4327820A | Disc brake and method of manufacturing the same | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US4301724A | Plane printing machine | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.