| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05K3-0055 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C18-1617
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C18-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23F1-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K13-00 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H05K3-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C18-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K13-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23F1-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C18-16 |
| filingDate |
1986-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1990-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
1990-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0204399-B1 |
| titleOfInvention |
Method of regenerating permanganate etch bath |
| abstract |
A method is provided for regenerating the spent permanganate ions in an alkaline permanganate-containing etchant composition by adding to the composition an oxidiser selected from an inorganic bromate, hypochlorite, chlorite, chlorate, peroxydisulfate, monopersulfate and mixtures thereof. |
| priorityDate |
1985-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |