CHLORINE ENGINEERS CORP., LTD.
81Patents
22Active
81Granted
41Portfolio score
Filing activity: Oct 21, 1976 → Dec 27, 2011 · 19 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5399184A | Method for fabricating gas diffusion electrode assembly for fuel cells | Emerging Cross-Sectional Technologies | 74 | Expired |
| US5632847A | Film removing method and film removing agent | Emerging Cross-Sectional Technologies | 59 | Expired |
| US4605685A | Method for preparation of graft polymeric membranes | Chemistry; Metallurgy | 49 | Expired |
| US5378317A | Method for removing organic film | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4151052A | Process for producing sodium hypochlorite | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4465580A | Cathode for use in electrolysis | Chemistry; Metallurgy | 29 | Expired |
| US6368473B1 | Soda electrolytic cell provided with gas diffusion electrode | Chemistry; Metallurgy | 25 | Expired |
| US4104039A | Process for concentrating or liquefying a specified component of a gaseous mixture | Performing Operations; Transporting | 23 | Expired |
| US4116805A | Bipolar electrode | Chemistry; Metallurgy | 18 | Expired |
| US4384941A | Process for electrolyzing water | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4173525A | Electrolytic cell for electrolysis of sea water | Chemistry; Metallurgy | 15 | Expired |
| US5954928A | Activated cathode and method for manufacturing the same | Chemistry; Metallurgy | 15 | Expired |
| US4279712A | Method for electrolyzing hydrochloric acid | Chemistry; Metallurgy | 14 | Expired |
| US4317709A | Apparatus for electrolyzing an aqueous solution | Chemistry; Metallurgy | 13 | Expired |
| US5178735A | Process for the supercritical extraction and separation of solid samples | Performing Operations; Transporting | 13 | Expired |
| US4775452A | Process for dissolution and recovery of noble metals | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5405508A | Method for regenerating tetraalkylammonium hydroxide | Chemistry; Metallurgy | 13 | Expired |
| US5354434A | Method for regenerating tetraalkylammonium hydroxide | Chemistry; Metallurgy | 12 | Expired |
| US6372102B1 | Method for reducing charge in gas diffusing electrode and its charge reducing structure | Chemistry; Metallurgy | 12 | Expired |
| US4238311A | Cathode for use in electrolysis and method for the production thereof | Chemistry; Metallurgy | 12 | Expired |
| US6383349B1 | Electrolytic cell using gas diffusion electrode and power distribution method for the electrolytic cell | Chemistry; Metallurgy | 12 | Expired |
| US4396727A | Cation exchange membrane and process for producing the same | Chemistry; Metallurgy | 12 | Expired |
| US8197649B2 | Ion exchange membrane electrolytic cell | Chemistry; Metallurgy | 12 | Active |
| US7404878B2 | Gas diffusion electrode assembly, bonding method for gas diffusion electrodes, and electrolyzer comprising gas diffusion electrodes | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4141815A | Bipolar electrode | Chemistry; Metallurgy | 11 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.