Diamond Shamrock Corporation
329Patents
0Active
329Granted
42Portfolio score
Filing activity: Jun 25, 1969 → Jun 22, 1983
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4347568A | Occupational health/environmental surveillance | Physics | 135 | Expired |
| US4298697A | Method of making sheet or shaped cation exchange membrane | Emerging Cross-Sectional Technologies | 133 | Expired |
| US4025405A | Electrolytic production of high purity alkali metal hydroxide | Chemistry; Metallurgy | 78 | Expired |
| US4239679A | High bulk density rigid poly(vinyl chloride) resin powder composition and preparation thereof | Chemistry; Metallurgy | 74 | Expired |
| US4147599A | Production of alkali metal carbonates in a cell having a carboxyl membrane | Chemistry; Metallurgy | 72 | Expired |
| US4354958A | Fibrillated matrix active layer for an electrode | Chemistry; Metallurgy | 65 | Expired |
| US4386987A | Electrolytic cell membrane/SPE formation by solution coating | Emerging Cross-Sectional Technologies | 60 | Expired |
| US4331528A | Coated metal electrode with improved barrier layer | Chemistry; Metallurgy | 56 | Expired |
| US4469579A | Solid polymer electrolytes and electrode bonded with hydrophylic fluorocopolymers | Chemistry; Metallurgy | 54 | Expired |
| US4330450A | Amphoteric water-in-oil self-inverting polymer emulsion | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4100052A | Electrolytic generation of halogen biocides | Chemistry; Metallurgy | 52 | Expired |
| US4107022A | Wafer electrode for an electrolytic cell | Chemistry; Metallurgy | 48 | Expired |
| US4108752A | Electrolytic cell bank having spring loaded intercell connectors | Chemistry; Metallurgy | 45 | Expired |
| US3948636A | Flowable aqueous composition of water-insoluble pesticide | Human Necessities | 44 | Expired |
| US4129493A | Swimming pool chlorinator system | Chemistry; Metallurgy | 43 | Expired |
| US4379772A | Method for forming an electrode active layer or sheet | Emerging Cross-Sectional Technologies | 42 | Expired |
| US4421579A | Method of making solid polymer electrolytes and electrode bonded with hydrophyllic fluorocopolymers | Emerging Cross-Sectional Technologies | 42 | Expired |
| US4225456A | Water-in-oil emulsion defoamer compositions, their preparation and use | Performing Operations; Transporting | 40 | Expired |
| US4331525A | Electrolytic-ultrafiltration apparatus and process for recovering solids from a liquid medium | Human Necessities | 39 | Expired |
| US4017375A | Bipolar electrode for an electrolytic cell | Chemistry; Metallurgy | 38 | Expired |
| US4337140A | Strengthening of carbon black-teflon-containing electrodes | Emerging Cross-Sectional Technologies | 38 | Expired |
| US4080270A | Production of alkali metal carbonates in a membrane cell | Chemistry; Metallurgy | 38 | Expired |
| US4425949A | Process for removing undesirable substances from electrical devices | Electricity | 38 | Expired |
| US4147839A | Electrochemical cell with stirred slurry | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4456521A | Three layer laminate | Emerging Cross-Sectional Technologies | 36 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.