John D. Rankin
Engineering at Braewick Dr, Houston, TX
License number
Louisiana PE.0008620
Issued Date
Sep 4, 1962
Category
Civil Engineer
Address
Address
9426 Braewick Dr, Houston, TX 77096
Professional information
Security At Lyondell
Position:
security at lyondell
Location:
Houston, Texas Area
Industry:
Security and Investigations
Work:
lyondell
-
security
Process For Determining The Api Gravity Of Oil By Fid
US Patent:
4248599, Feb 3, 1981
Filed:
Sep 19, 1979
Appl. No.:
6/077251
Inventors:
Pierre R. Mommessin - Houston TX
John R. Castano - Houston TX
John G. Rankin - Houston TX
Mary L. Weiss - Spring TX
John R. Castano - Houston TX
John G. Rankin - Houston TX
Mary L. Weiss - Spring TX
Assignee:
Shell Oil Company - Houston TX
International Classification:
G01N 3112, G01N 2172, G01N 900
US Classification:
23230HC
Abstract:
The API gravity of an oil is determined by vaporizing its volatile and pyrolyzable components, measuring the ratio of the amount vaporized within a range of relatively high temperatures to the total amount vaporized and determining that the gravity of the oil being tested equals that of an oil which has a similar composition and which, when a substantially equal amount is tested under substantially the same conditions, yields a similar ratio of amounts vaporized at the same temperatures.