ORC MANUFACTURING CO., LTD.
80Patents
21Active
80Granted
53Portfolio score
Filing activity: Jan 11, 1979 → Aug 14, 2024 · 17 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4591724A | Curing apparatus | Performing Operations; Transporting | 44 | Expired |
| US4645349A | Method of measuring film thickness | Physics | 41 | Expired |
| US5150253A | Reflective mirror having cooling unit attached thereto | Physics | 27 | Expired |
| US5147130A | Cooling liquid recirculation system for light source unit | Physics | 22 | Expired |
| US6879378B2 | Exposure apparatus and method of conveying mask and work | Physics | 19 | Expired |
| US4764791A | Work alignment apparatus for double-sided exposure of a work | Electricity | 16 | Expired |
| US5176782A | Apparatus for photochemically ashing a photoresist | Physics | 15 | Expired |
| US4577959A | Exposure apparatus | Physics | 12 | Expired |
| US6379103B1 | Substrate transfer apparatus | Performing Operations; Transporting | 12 | Expired |
| US4721980A | Transfer type each-side exposure apparatus | Physics | 11 | Expired |
| US4565443A | Printing apparatus | Electricity | 10 | Expired |
| US4854004A | Device for clearing the hole blockage of a liquid resist substrate | Electricity | 10 | Expired |
| US5563682A | Exposing apparatus with mask alignment system and method of aligning, exposing and transferring work | Physics | 9 | Expired |
| US5185625A | Exposure apparatus for forming pattern on printed-wiring board | Electricity | 8 | Expired |
| US4850710A | Method of measuring and displaying double refraction occurring in a material to be measured | Physics | 8 | Expired |
| US6525472B2 | Dielectric barrier discharge lamp | Electricity | 7 | Expired |
| US6258495A | Process for aligning work and mask | Physics | 7 | Expired |
| US6294869A | High intensity light irradiation apparatus | Electricity | 7 | Expired |
| US6215247A | Construction of electrode for high pressure discharge lamp and process for producing the same | Electricity | 6 | Expired |
| US4241255A | Ultraviolet ray projector | Performing Operations; Transporting | 6 | Expired |
| US5258808A | Exposure apparatus for forming image | Electricity | 6 | Expired |
| US4525061A | Combination of a plate for exposure and frame plates | Electricity | 6 | Expired |
| US5606172A | Exposing apparatus and exposing method of works | Electricity | 6 | Expired |
| US4547066A | Exposure apparatus | Physics | 5 | Expired |
| US7136087B2 | Multi-exposure drawing method and apparatus therefor | Physics | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.