Johnson Matthey Inc.
194Patents
3Active
194Granted
43Portfolio score
Filing activity: Oct 26, 1972 → Nov 5, 2010 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4902487A | Treatment of diesel exhaust gases | Mechanical Engineering; Lighting; Heating | 207 | Expired |
| US4399199A | Protective layer | Emerging Cross-Sectional Technologies | 106 | Expired |
| US6024938A | Lyophilized imaging agent formulation comprising a chemotactic peptide | Human Necessities | 97 | Expired |
| US4049484A | Vacuum transfer head and method of use | Emerging Cross-Sectional Technologies | 77 | Expired |
| US4089810A | Catalyst | Emerging Cross-Sectional Technologies | 55 | Expired |
| US5855821A | Materials for semiconductor device assemblies | Electricity | 54 | Expired |
| US3972837A | Catalyst for purifying automotive exhaust gases | Emerging Cross-Sectional Technologies | 54 | Expired |
| US5206370A | Certain pyridyl hydrazines and hydrazides useful for protein labeling | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4459166A | Method of bonding an electronic device to a ceramic substrate | Emerging Cross-Sectional Technologies | 51 | Expired |
| US6451422B1 | Thermal interface materials | Emerging Cross-Sectional Technologies | 47 | Expired |
| US4401767A | Silver-filled glass | Emerging Cross-Sectional Technologies | 44 | Expired |
| US5336644A | Sealing glass compositions | Chemistry; Metallurgy | 43 | Expired |
| US4189405A | Intermetallic catalysts | Chemistry; Metallurgy | 43 | Expired |
| US5169604A | Catalytic converter with replaceable carrier assembly | Mechanical Engineering; Lighting; Heating | 42 | Expired |
| US4289652A | Catalyst comprising a metal substrate | Chemistry; Metallurgy | 40 | Expired |
| US4162235A | Catalysts | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5150195A | Rapid-curing adhesive formulation for semiconductor devices | Electricity | 38 | Expired |
| US5061464A | Oxidation process and catalyst for use therefor | Performing Operations; Transporting | 38 | Expired |
| US5087297A | Aluminum target for magnetron sputtering and method of making same | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4203912A | Compositions containing platinum | Human Necessities | 33 | Expired |
| US4130506A | Metal powders | Emerging Cross-Sectional Technologies | 33 | Expired |
| US4225529A | Compositions containing platinum | Human Necessities | 33 | Expired |
| US4509327A | Regenerating catalytic particulate filters and apparatus therefor | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5989459A | Compliant and crosslinkable thermal interface materials | Emerging Cross-Sectional Technologies | 33 | Expired |
| US4237032A | Catalysts | Emerging Cross-Sectional Technologies | 33 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.