The BOC Group plc
369Patents
3Active
369Granted
42Portfolio score
Filing activity: Jul 16, 1982 → Jun 14, 2006 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4686354A | Inhalation apparatus | Human Necessities | 209 | Expired |
| US6776163B2 | Nasal cannulae | Human Necessities | 172 | Expired |
| US5146915A | Anesthetic vaporizers | Human Necessities | 114 | Expired |
| US5592934A | Anaesthetic vaporizer | Physics | 114 | Expired |
| US5672160A | Medical devices | Human Necessities | 113 | Expired |
| US6006797A | Method and vessel for the storage of gas | Emerging Cross-Sectional Technologies | 109 | Expired |
| US5234472A | Separation of gas mixtures including hydrogen | Emerging Cross-Sectional Technologies | 87 | Expired |
| US5944507A | Oxy/oil swirl burner | Emerging Cross-Sectional Technologies | 78 | Expired |
| US7059152B2 | Nitrogen rejection method and apparatus | Emerging Cross-Sectional Technologies | 73 | Expired |
| US5863195A | Oxygen-fuel burner | Mechanical Engineering; Lighting; Heating | 65 | Expired |
| US4652408A | Inhalation apparatus | Human Necessities | 58 | Expired |
| US5645052A | Anaesthetic vaporizer with expandable/contractable reservoir for pumping liquid anaesthetic | Human Necessities | 54 | Expired |
| US5451248A | Storage and transportation of goods under controlled atmospheres | Human Necessities | 54 | Expired |
| US5381836A | Fluid delivery system | Emerging Cross-Sectional Technologies | 47 | Expired |
| US5692890A | Combination apparatus | Emerging Cross-Sectional Technologies | 47 | Expired |
| US6616908B2 | Treatment of a gas stream containing hydrogen sulphide | Chemistry; Metallurgy | 43 | Expired |
| US5470379A | Membrane plant: automatic control of | Performing Operations; Transporting | 38 | Expired |
| US5112590A | Separation of gas mixtures including hydrogen | Emerging Cross-Sectional Technologies | 36 | Expired |
| US5617906A | Container for anaesthetic agent | Human Necessities | 34 | Expired |
| US4715998A | Inhalation apparatus | Human Necessities | 34 | Expired |
| US4639340A | Dissolving gas in a liquid | Emerging Cross-Sectional Technologies | 32 | Expired |
| US6517801B2 | Treatment of gas streams containing hydrogen sulphide | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5692381A | Apparatus for chilling fluids | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US4843828A | Liquid-vapor contact method and apparatus | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US5160769A | Thermal insulation: CO.sub.2 filled foam | Emerging Cross-Sectional Technologies | 30 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.