| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fec576c38e34882531ca37d6b922bf42 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-50 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-466 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-46 |
| filingDate |
1969-06-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1971-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bae538192dd3926906724fae89ea7917
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0d2042d0f0729d4d90d04c2d19fb4b99
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1e2ba708dde88b63617697edbf0b330f |
| publicationDate |
1971-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3615189-A |
| titleOfInvention |
Process for preparing gypsum hemihydrate |
| abstract |
Stable calcium sulfate hemihydrate is produced by suspending particulate gypsum in a reaction mixture comprising a water solution of a water-soluble inorganic salt such as a salt of an alkali metal, an alkaline earth metal or ammonium, and at least one of the group consisting of phosphoric acid and water-soluble phosphate salts; and heating the reaction mixture at a temperature and for a period of time sufficient to convert the particulate gypsum to particulate calcium sulfate hemihydrate containing a small quantity of phosphoric acid in solid solution, and separating the particulate calcium sulfate hemihydrate from the reaction mixture. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8329308-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5248487-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0179116-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6822033-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4183908-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2519122-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8070895-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8568544-B2 |
| priorityDate |
1969-06-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |