Assignee
HELIOTRONIC GMBH
DE·21 granted patents·550 citations·filing 1980–1990
Top patents by PatentIndex Score
21 records- 0197US4312850ASemicontinuous process for the manufacture of pure siliconHELIOTRONIC GMBH·Filed 1980·Granted Jan 26, 1982·102 cites·8 claims
- 0290US4447289AProcess for the manufacture of coarsely crystalline to monocrystalline sheets of semiconductor materialHELIOTRONIC GMBH·Filed 1982·Granted May 8, 1984·52 cites·6 claims
- 0388US4428783AProcess for the manufacture of vertical P-N junctions in the pulling of silicon from a silicon meltHELIOTRONIC GMBH·Filed 1981·Granted Jan 31, 1984·48 cites·7 claims
- 0487US4871117ALow-contamination method for comminuting solid silicon fragmentsHELIOTRONIC GMBH·Filed 1989·Granted Oct 3, 1989·48 cites·10 claims
- 0581US4366024AProcess for making solar cell base materialHELIOTRONIC GMBH·Filed 1980·Granted Dec 28, 1982·27 cites·12 claims
- 0680US4312700AMethod for making silicon rodsHELIOTRONIC GMBH·Filed 1980·Granted Jan 26, 1982·40 cites·8 claims
- 0779US4457903ASemicontinuous process for the production of pure siliconHELIOTRONIC GMBH·Filed 1983·Granted Jul 3, 1984·26 cites·7 claims
- 0877US4759887AApparatus and process for the manufacture of shaped bodies from silicon granulatesHELIOTRONIC GMBH·Filed 1986·Granted Jul 26, 1988·36 cites·13 claims
- 0975US4787986AProcess and apparatus for melting silicon powderHELIOTRONIC GMBH·Filed 1987·Granted Nov 29, 1988·24 cites·9 claims
- 1073US4461671AProcess for the manufacture of semiconductor wafersHELIOTRONIC GMBH·Filed 1982·Granted Jul 24, 1984·18 cites·8 claims
- 1170US5093289ACeramic material permitting the passage of fluids and based on silicon powder reaction-bonded in the presence of carbonHELIOTRONIC GMBH·Filed 1989·Granted Mar 3, 1992·28 cites·11 claims
- 1269US4515600AProcess for the removal of the slag portion from molten mixtures of slag and silicon using a semipermeable separating wallHELIOTRONIC GMBH·Filed 1983·Granted May 7, 1985·11 cites·5 claims
- 1368US4769107AProcess and apparatus for the cyclical manufacture of silicon shaped articlesHELIOTRONIC GMBH·Filed 1985·Granted Sep 6, 1988·21 cites·5 claims
- 1468US4588571AProcess for the purification of silicon by the action of an acidHELIOTRONIC GMBH·Filed 1984·Granted May 13, 1986·31 cites·17 claims
- 1554US5164138AMaterial comprising silicon and process for its manufactureHELIOTRONIC GMBH·Filed 1990·Granted Nov 17, 1992·16 cites·30 claims
- 1648US4767585AProcess for producing molded bodies from granular material of silicon, germanium or mixed crystals of these elementsHELIOTRONIC GMBH·Filed 1987·Granted Aug 30, 1988·9 cites·10 claims
- 1737US4308245AMethod of purifying metallurgical-grade siliconHELIOTRONIC GMBH·Filed 1980·Granted Dec 29, 1981·3 cites·7 claims
- 1835US4755340AMethod for producing packs of blades used for cutting crystal bars into wafersHELIOTRONIC GMBH·Filed 1987·Granted Jul 5, 1988·6 cites·2 claims
- 1927US4777926ADevice for clamping the blades in a gang saw for sawing crystal rodsHELIOTRONIC GMBH·Filed 1983·Granted Oct 18, 1988·0 cites·4 claims
- 2025US4733649AProcess and apparatus for multiple lap cutting of solid materialsHELIOTRONIC GMBH·Filed 1985·Granted Mar 29, 1988·3 cites·8 claims
- 2122US4539972AMethod for the multiple lap-cutting of crystal blocks with continuous shortening of the blade excursionHELIOTRONIC GMBH·Filed 1983·Granted Sep 10, 1985·1 cites·6 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →