Air Liquide America Corporation
64Patents
0Active
64Granted
40Portfolio score
Filing activity: Dec 30, 1993 → Feb 22, 2005
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6242359A | Plasma cleaning and etching methods using non-global-warming compounds | Electricity | 472 | Expired |
| US6116896A | System and method for oxidant injection in rotary kilns | Mechanical Engineering; Lighting; Heating | 72 | Expired |
| US5881577A | Pressure-swing absorption based cleaning methods and systems | Textiles; Paper | 67 | Expired |
| US6050283A | System and method for on-site mixing of ultra-high-purity chemicals for semiconductor processing | Emerging Cross-Sectional Technologies | 55 | Expired |
| US6086833A | Process and equipment for sanitizing and packaging food using ozone | Human Necessities | 41 | Expired |
| US5665894A | Instrument calibrating demand flow regulator | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5496388A | System for compressing air and extracting nitrogen from compressed air | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US6135433A | Continuous gas saturation system and method | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5409159A | Apparatus and methods for inerting solder during wave soldering operations | Performing Operations; Transporting | 23 | Expired |
| US5375426A | Process to clean a lubricated vapor compression refrigeration system by using carbon dioxide | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US5779863A | Perfluorocompound separation and purification method and system | Chemistry; Metallurgy | 18 | Expired |
| US6363728B1 | System and method for controlled delivery of liquefied gases from a bulk source | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5979178A | Process for recovering olefins from cracked gases | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5765381A | Multitier crossflow cryogenic freezer and method of use | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US6711961B2 | Methods and apparatus for recycling cryogenic liquid or gas from test chambers | Physics | 16 | Expired |
| US5941081A | Solid phase latent heat vapor extraction and recovery system for liquified gases | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US6051421A | Continuous processing apparatus and method for cleaning articles with liquified compressed gaseous solvents | Textiles; Paper | 14 | Expired |
| US6001223A | On-site ammonia purification for semiconductor manufacture | Chemistry; Metallurgy | 13 | Expired |
| US5411200A | Process and apparatus for the wave soldering of circuit boards | Performing Operations; Transporting | 13 | Expired |
| US5992337A | Methods of improving productivity of black liquor recovery boilers | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5606861A | Crossflow cryogenic freezer and method of use | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US7334708B2 | Integral blocks, chemical delivery systems and methods for delivering an ultrapure chemical | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US5520320A | Process for wave soldering components on a printed circuit board in a temperature controlled non-oxidizing atmosphere | Electricity | 11 | Expired |
| US7102098B2 | Method and system for solving a problem arising during a welding operation or the like | Performing Operations; Transporting | 11 | Expired |
| US6350425B2 | On-site generation of ultra-high-purity buffered-HF and ammonium fluoride | Electricity | 11 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.