Fried Krupp
294Patents
0Active
294Granted
42Portfolio score
Filing activity: Aug 25, 1971 → Jul 20, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4170990A | Method for implanting and subsequently removing mechanical connecting elements from living tissue | Human Necessities | 291 | Expired |
| US4692218A | Process for producing ethanol | Emerging Cross-Sectional Technologies | 161 | Expired |
| US4993834A | Spectrometer for the simultaneous measurement of intensity in various spectral regions | Physics | 160 | Expired |
| US4671761A | Apparatus for producing reinforced elongate bodies | Emerging Cross-Sectional Technologies | 132 | Expired |
| US4492808A | Method for separating ethanol from an ethanol containing solution | Emerging Cross-Sectional Technologies | 110 | Expired |
| US4402392A | Portable belt conveyor, particularly a plate belt conveyor for crushing plants | Performing Operations; Transporting | 86 | Expired |
| US4881431A | Method of making a sintered body having an internal channel | Emerging Cross-Sectional Technologies | 73 | Expired |
| US4758964A | Method and apparatus for monitoring machine parts | Physics | 68 | Expired |
| US4642401A | Process for the production of liquid hydrocarbons | Chemistry; Metallurgy | 68 | Expired |
| US4904264A | Artifical joint system | Human Necessities | 65 | Expired |
| US4608857A | Method for checking pipes or pipe networks for leaks | Physics | 54 | Expired |
| US4681482A | Rollable temporary roadway and apparatus for rolling up an installed temporary roadway | Fixed Constructions | 49 | Expired |
| US4019873A | Coated hard metal body | Emerging Cross-Sectional Technologies | 47 | Expired |
| US3999954A | Hard metal body and its method of manufacture | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4813823A | Drilling tool formed of a core-and-casing assembly | Emerging Cross-Sectional Technologies | 41 | Expired |
| US4776863A | Cutting tool | Emerging Cross-Sectional Technologies | 38 | Expired |
| US4176337A | Apparatus for measuring the time between received pulses | Physics | 36 | Expired |
| US4675133A | Process for apparatus for the recovery of fats and oils | Chemistry; Metallurgy | 36 | Expired |
| US4698136A | Process for the continuous production of boiler feed water | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4007034A | Method for making steel | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4284687A | Compound body | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4646854A | Hydraulic striking device | Performing Operations; Transporting | 35 | Expired |
| US4912237A | Process for producing furfural | Chemistry; Metallurgy | 35 | Expired |
| US4924063A | Method and apparatus for determining the position of a weld groove for laser welding | Performing Operations; Transporting | 33 | Expired |
| US4045214A | Method for producing steel | Emerging Cross-Sectional Technologies | 31 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.