http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0261054-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_27e0cface7aaef52b9ec501d7a686312 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23F15-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F16L58-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F16L9-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C23C8-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22F1-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C8-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22F1-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F16L9-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E03C1-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23C8-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F16L58-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F16L58-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F16L58-02 |
| filingDate | 1989-07-07^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d2d99a5bc9b2a563e75f7acb336bff85 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_183afbb3c4285ca194611bb85f1e9ede http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ae0bbf0ef3ca551e5bd948c691c919bc |
| publicationDate | 1990-03-01^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H0261054-A |
| titleOfInvention | Inside surface-oxidized pipe |
| abstract | PURPOSE: To produce an inside surface-oxidized pipe having an oxide layer, which is free from crazing and does not exhibit peeling, by oxidizing the inside surface of a pipe consisting of copper, thereby forming the oxide layer of a specific thickness. n CONSTITUTION: At the time of oxidizing the inside surface of a pipe consisting of copper or copper alloy in order to use the pipe in a sanitary field, etc., the inside surface of the pipe is continuously subjected to an annealing treatment by passing a gaseous mixture through the inside surface of the pipe at about 600 to 730°C and at a passing speed of 5 to 220m/min, to form the oxide layer having 0.01 to 0.2μ thickness on the inside surface. At this time, the compsn. of the gaseous mixture is composed of 1 to 25vol.%, more preferably 5 to 15vol.% oxygen and 75 to 99vol.%, more preferably 85 to 95vol.% inert gas (Ar, etc.). The inside surface consists of the uniform copper oxide layer having the max. grain size of 0.03 to <0.1μ. The layer is so formed as to have the (1, 1, 1) structure of the oriented copper oxide crystals. As a result, the pipe having the inside surface oxide layer, which is free from crazing and does not exhibit peeling in spite of elongating or bending of the pipe is obtd. n COPYRIGHT: (C)1990,JPO |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5365802-A |
| priorityDate | 1988-08-12^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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