Ortech LLP
13Patents
0Active
13Granted
32Portfolio score
Filing activity: Jun 13, 1989 → Oct 29, 2001
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5875817A | Digital gas metering system using tri-stable and bi-stable solenoids | Emerging Cross-Sectional Technologies | 149 | Expired |
| US5150690A | Flow control system | Emerging Cross-Sectional Technologies | 71 | Expired |
| US5568801A | Plasma arc ignition system | Mechanical Engineering; Lighting; Heating | 68 | Expired |
| US5035206A | Dual fuel natural gas/diesel 2-stroke engine | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5931035A | Cylinder type lock arrangement | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6637245B1 | Methods of making key assemblies | Emerging Cross-Sectional Technologies | 21 | Expired |
| US6308542A | Key assemblies and methods of making same | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5620737A | Process for preparing hydrolyzed food product for animal consumption | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5551387A | Tuned intake manifold for OTTO cycle engines | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5232606A | Process for recycling of supported or contaminated PVC | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5055179A | Upgrading heavy oil | Chemistry; Metallurgy | 3 | Expired |
| US5851002A | Tri-stable solenoid-operated valve | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US5290525A | Removal of base metals and cyanide from gold-barren CIP solutions | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.