Inventor
Karl-Alexander Schwetz
Inventor
Sulzberg, DE
Overview
Patents· 14 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C04Bprimary
C04BLime, magnesia68%
F16CShafts11%
C01BNon-metallic elements5%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium5%
C22CAlloys5%
Y10TTechnical subjects covered by former us classification5%
PatentTitleYear
6,777,076'Graphite-coated shaped body made of sintered silicon carbide'20046,531,423'Liquid-phase-sintered SiC shaped bodies with improved fracture toughness and a high electric resistance'20035,762,895'Bearing material of porous SIC having a trimodal pore composition'19985,543,370'Composite materials based on boron carbide, titanium diboride and elemental carbon and processes for the preparation of same'19965,505,899'Process for producing bodies based on boron carbide by pressureless sintering'19965,372,979'Composite materials based on titanium diboride'19945,045,512'Mixed sintered metal materials based on borides, nitrides and iron binder metals'19914,970,036'Process for producing green compacts by molding sinterable ceramic mixtures based on silicon nitride'19904,908,173'Process for preparation of dense molded bodies of polycrystalline aluminum nitride without use of sintering aids'19904,803,183'Dense molded bodies of polycrystalline aluminum nitride and process for preparation without use of sintering aids'19894,614,724'Polycrystalline sintered compacts based on europium hexaboride and process for their manufacture'19864,564,601'Shaped polycrystalline silicon carbide articles and isostatic hot-pressing process'19864,524,138'Substantially pore-free sintered polycrystalline articles of .alpha.-silicon carbide, boron carbide and free carbon and process for their manufacture'19854,230,497'Dense sintered shaped articles of polycrystalline .alpha.-silicon carbide and process for their manufacture'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–1998Patents assigned to KEMPTEN ELEKTROSCHMELZ GMBH (10)· patent assignee history
1980–2004Based in Sulzberg, DE· patent location history
1986–2004Patents assigned to WACKER CHEMIE GMBH (3)· patent assignee history
1990Patents assigned to GRELLNER WOLFGANG (1)· patent assignee history
1990Patents assigned to HUNOLD KLAUS (1)· patent assignee history
1990Patents assigned to LIPP ALFRED (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KEMPTEN ELEKTROSCHMELZ GMBH | 10 | 1980–1998 |
| WACKER CHEMIE GMBH | 3 | 1986–2004 |
| GRELLNER WOLFGANG | 1 | 1990 |
| HUNOLD KLAUS | 1 | 1990 |
| LIPP ALFRED | 1 | 1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Sulzberg, DE | 14 | 1980–2004 |