| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4b971ee1b25097b17c4e0925b203bd7b |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B32B15-015
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B33-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22C27-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F7-08 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B23K20-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C19-05
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B33-035
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B33-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F7-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B32B15-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22C38-00 |
| filingDate |
1985-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1989-09-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4c241316b51d387e806728647fca3eee
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6975fcec3c54cc8cdf37873585ed8a4b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_13e6152e84cb050381840615bd08d73b |
| publicationDate |
1989-09-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-1259458-A |
| titleOfInvention |
Wellhead structure and method of producing same |
| abstract |
Abstract of the Disclosure A wellhead structure having a body of a martensitic alloy with opening therein and a austenitic cladding lining the openings wherein the body, the cladding and the interface therebetween all have a strength of at least 75,000 psi and a ductility of at least ten percent. The method of producing a wellhead structure with an alloy steel body having openings therein and a corrosion resistant alloy cladding lining the openings including the steps of lining openings with the cladding by hot isostatic pressure process wherein the temperature does not exceed 2200°F and the cycle is held at temperature for less than four hours. |
| priorityDate |
1984-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |