| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d6402b23ab8782152be47b3996e48a4a |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-61
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-77 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B21-0648 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B21-064 |
| filingDate |
1987-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1989-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_21857fdc00c470a36b4006eb862621ca
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_37b1cfef98759f6cbf5866c965b97c26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ee6006cbf382996ea860905133375ec |
| publicationDate |
1989-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4853196-A |
| titleOfInvention |
Water-soluble boron containing impurity reduced hexagonally crystalline boron nitride and process for production thereof |
| abstract |
A hexagonally crystalline boron nitride containing water-soluble boron containing impurities in such a magnitude that the amount of boron contained in an extract after boiling at 100° C. in pure water is less than or equal to 100 μg per gram of boron nitride. In order to purify the boron nitride, a purification process is carried out according to the steps of preparing fine particles of boron nitride powder; dispersing the boron nitride powder in a dispersion medium and stirred for a given period of time for removing water-soluble boron containing impurities; and drying the boron nitride in atmosphere, in which the vapor pressure is maintained lower than or equal to 10 mmHG and/or the process temperature is maintained lower than or equal to 100° C. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5053365-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2015374596-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5068154-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2012196128-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5116791-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10208238-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5602062-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6541111-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009081316-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10793478-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6054520-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104661957-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6079913-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6319602-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10954167-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5854155-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8679429-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4997633-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10435820-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110577197-A |
| priorityDate |
1986-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |