Here is what happens in many cases.
You have approx. a dozen independent additive suppliers and other chemical companies (such as Stauffer, Rohm and Hass, Ciba-Geigy, Olin, Edwin Cooper), with most additive suppliers specializing in a particular type of additive.
Now Chevron, Exxon/Mobil, Ethyl, Lubrizol, RTV, and others patent their additive formulations. If one company needs a type of additive they don't have in their line-up, a license agreement is made with one of the other add makers and the particular additive is marketed under that name. For the biggies like BP/Amoco, Texaco/Shell and Exxon/Mobil, they develop most of their own adds in their in-house labs. For those adds they may not deem cost effective to produce in-house, they would go to one of the independant additive suppliers for their product and/or license the patent for the additive.
Looking through the patents for all types of modern additives from about 1960 to today, here is a quick summary of additive patents (for IC engines) filings from most to least:
1. Exxon/Mobil
2. Chevron
3. Lubrizol
4. Texaco
Other listed are:
Ethyl, Stauffer, Rohm and Hass, Ciba-Geigy, Olin, Edwin Cooper, R.T. Vanderbilt, King, Omega, Ultra, Tomah, Stepan, Crompton, Functional Products, and other Chemical companies, both domestic and foreign.
So I would have to disagree somewhat with Lubrizol's marketing statement.
[ August 16, 2003, 05:32 PM: Message edited by: MolaKule ]