Nihon Kogyo Co., Ltd.
19Patents
0Active
19Granted
33Portfolio score
Filing activity: Jun 3, 1975 → Nov 28, 2000
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4619695A | Process for producing high-purity metal targets for LSI electrodes | Emerging Cross-Sectional Technologies | 38 | Expired |
| US6705797B1 | Paving block and its installation method | Emerging Cross-Sectional Technologies | 25 | Expired |
| US4770948A | High-purity metal and metal silicide target for LSI electrodes | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4309457A | Process of producing multilayer-coated composite powder | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4362579A | High-strength-conductivity copper alloy | Electricity | 14 | Expired |
| US4243728A | Double-metal-coated metal sulfide powder and process of producing the same | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4242376A | Method for metal plating of powder by substitution | Chemistry; Metallurgy | 8 | Expired |
| US4309458A | Process of producing composite powder coated with noble metal | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4572823A | Process for rhenium recovery | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4055621A | Process for obtaining titanium tetrachloride, chlorine and iron oxide from ilmenite | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4233254A | Process for granulating metal sulfide powders | Chemistry; Metallurgy | 6 | Expired |
| US4452757A | Copper alloy for radiators | Chemistry; Metallurgy | 5 | Expired |
| US4585621A | Vapor-deposited film of selenium or selenium alloy for electrophotography | Physics | 5 | Expired |
| US4614568A | High-speed silver plating and baths therefor | Chemistry; Metallurgy | 5 | Expired |
| US4257778A | Process for producing synthetic coking coal of high volatile matter content | Chemistry; Metallurgy | 4 | Expired |
| US4221828A | Process of producing metal sulfide powder coated with copper | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4615964A | Vapor-deposited film of selenium as photoreceptor for electrophotography and process for producing the same | Physics | 1 | Expired |
| US4076523A | Pyrometallurgical process for lead refining | Chemistry; Metallurgy | 1 | Expired |
| US4021235A | Operating method for slag cleaning furnace in copper refining | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.