Inventor
Helmut Zauhar
Inventor
Burghausen, DE
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C30Bprimary
C30BSingle-crystal growth33%
B23DPlaning17%
B28DWorking stone or stone-like materials17%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
Y10TTechnical subjects covered by former us classification17%
PatentTitleYear
4,769,107'Process and apparatus for the cyclical manufacture of silicon shaped articles'19884,633,847'Multiple-blade internal-hole saw for sawing crystalline rods'19874,513,544'Method of sawing crystalline rods, and multiple-blade internal-hole saw for carrying out the method'19854,175,610'Process and apparatus for the semicontinuous production of silicon moldings'19794,140,571'Crucible-free zone refining of semiconductor material including annular support member'19794,060,392'Device for the support of a crystalline rod'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1985Patents assigned to WACKER CHEMITRONIC (4)· patent assignee history
1977–1988Based in Burghausen, DE· patent location history
1987Patents assigned to WACKER CHEMIE GES FUR ELEKTRON (1)· patent assignee history
1988Patents assigned to HELIOTRONIC GMBH (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WACKER CHEMITRONIC | 4 | 1977–1985 |
| HELIOTRONIC GMBH | 1 | 1988 |
| WACKER CHEMIE GES FUR ELEKTRON | 1 | 1987 |
Locations
| Location | Patents | Span |
|---|---|---|
| Burghausen, DE | 6 | 1977–1988 |