J.H. Fenner & Co. Ltd
22Patents
0Active
22Granted
31Portfolio score
Filing activity: Aug 21, 1975 → Dec 2, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5604656A | Electromechanical relays | Electricity | 97 | Expired |
| US5189350A | Monitoring system | Electricity | 50 | Expired |
| US6131621A | Vapor recovery system for a fuel dispenser | Performing Operations; Transporting | 32 | Expired |
| US4427107A | Belting | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4383691A | Fluid seal with rib for rotary shaft | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4344525A | Scraper device | Performing Operations; Transporting | 17 | Expired |
| US4063741A | Fluid face seal assemblies | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4512681A | Taper bush | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4410190A | Fluid seal pumping effect lip seal for rotary shaft | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4018641A | Belting and similar articles | Performing Operations; Transporting | 7 | Expired |
| US4269305A | Powered conveyors | Performing Operations; Transporting | 7 | Expired |
| US4169530A | Pulley assemblies | Performing Operations; Transporting | 6 | Expired |
| US5035448A | Swivel or rotating joint | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5044539A | Apparatus for affixing fasteners to a conveyor belt | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4789188A | Swivel or rotating joints | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4247123A | Seals | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US4403780A | Annular fluid seals | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US5128083A | Process for modifying the surface of hard engineering ceramic materials | Chemistry; Metallurgy | 1 | Expired |
| US5044817A | Threaded bush assembly for shaft mount | Emerging Cross-Sectional Technologies | 1 | Expired |
| USD293586S | Belt jointing device | General | 0 | Expired |
| US4288474A | Conveyor belting | Performing Operations; Transporting | 0 | Expired |
| US4386781A | Annular fluid face seal with diaphragm | Mechanical Engineering; Lighting; Heating | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.