JAPAN PIONICS CO., LTD.
65Patents
8Active
65Granted
39Portfolio score
Filing activity: Sep 14, 1982 → Dec 17, 2015 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4516564A | Heat generating body | Human Necessities | 99 | Expired |
| US5895521A | Dust removing apparatus and dust removing method | Performing Operations; Transporting | 54 | Expired |
| US5425975A | Sheet-shaped heat-generating body | Emerging Cross-Sectional Technologies | 40 | Expired |
| US5261241A | Refrigerant | Chemistry; Metallurgy | 36 | Expired |
| US4996030A | Method for cleaning exhaust gases | Chemistry; Metallurgy | 28 | Expired |
| US5975074A | Sheet type heating element and method of manufacturing the same | Electricity | 28 | Expired |
| US5597540A | Process for cleaning harmful gas | Performing Operations; Transporting | 27 | Expired |
| US6155540A | Apparatus for vaporizing and supplying a material | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5194233A | Process for purification of rare gas | Chemistry; Metallurgy | 23 | Expired |
| US4910001A | Method for cleaning gas containing toxic component | Performing Operations; Transporting | 23 | Expired |
| US4743435A | Method for cleaning exhaust gases | Performing Operations; Transporting | 22 | Expired |
| US6127294A | Sheet shaped heat generating body and method of manufacturing same | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6261345A | Process and apparatus for recovering ammonia | Performing Operations; Transporting | 20 | Expired |
| US6749819B2 | Process for purifying ammonia | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5489327A | Process for purifying hydrogen gas | Chemistry; Metallurgy | 17 | Expired |
| US6331281A | Process and apparatus for cleaning exhaust gas | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5589148A | Process for purifying halogen-containing gas | Performing Operations; Transporting | 16 | Expired |
| US5378444A | Process for cleaning harmful gas | Performing Operations; Transporting | 15 | Expired |
| US5935540A | Cleaning process for harmful gas | Performing Operations; Transporting | 13 | Expired |
| US5670445A | Cleaning agent of harmful gas and cleaning method | Performing Operations; Transporting | 13 | Expired |
| US6666921B2 | Chemical vapor deposition apparatus and chemical vapor deposition method | Chemistry; Metallurgy | 12 | Expired |
| US6106898A | Process for preparing nitride film | Chemistry; Metallurgy | 12 | Expired |
| US5429762A | Cooling agent | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5417948A | Process for cleaning harmful gas | Performing Operations; Transporting | 11 | Expired |
| US4817597A | Self-contained closed-circuit oxygen-generating breathing apparatus | Human Necessities | 9 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.