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RTK huge news Rentech Awarded 17th U.S. Patent Related to Its Gas-to-Liquids Process

Tuesday , May 04, 2004 13:37 ET

DENVER, May 4, 2004 /PRNewswire-FirstCall via COMTEX/ -- Rentech, Inc. (Amex: RTK) announced today that it was notified by the United States Patent Office that it had been awarded its 17th United States patent related to its Fischer-Tropsch (FT) gas-to-liquids technology (GTL). (Rentech now has 17 US patents and 3 international patents.)

US patent No. 6,730,221 describes the hardware needed to implement improvements in Rentech's patented dynamic settler used for the separation of reactor wax and catalyst during slurry-phase Fischer-Tropsch reactor operation. Previous related Rentech patents include No. 6,068,760 that teaches the base technology for the dynamic settler, and No. 6,712,982 that teaches methods of improving the performance of the dynamic settler.

Dr. Mark Bohn, Company co-founder and president of Rentech Services Corporation, commenting on Rentech's new patent stated: "Rentech's outstanding technical staff are working diligently to continuously improve the Rentech Fischer-Tropsch technology and to find new applications for it. This latest patent is an example of that work. On a weekly basis, we see an increasing number of statements in the press by energy producers and governments that GTL appears to be one of the technologies that can address the world's growing need for clean energy solutions. Continuing work to improve the competitiveness of our gas-to-liquids process is paramount as Rentech forges ahead to meet those needs."

Rentech, Inc., incorporated in 1981, is the developer and licensor of a patented and proprietary Fischer-Tropsch gas-to-liquids process (GTL) for conversion of synthesis gas made from natural gas, industrial off-gas, or solid or liquid carbon-bearing materials into high-value fuels and chemicals. These include clean burning, ultra-low-sulfur and ultra-low-aromatic fuels (beyond detectable limits), naphtha, waxes and fuel for fuel cells.

Statements made in this report and the information incorporated by reference into this report that are not historical factual statements are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. We intend such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. This section is included for purposes of complying with those safe harbor provisions. The forward-looking statements include, among other things, statements regarding the intent, belief or expectations of Rentech and its officers and can be identified by the use of terminology such as "may," "will," "expect," "believe," "intend," "plan," "estimate," "anticipate," "should" and other comparable terms or the negative of them. In addition, we, through our senior management, from time to time make forward-looking oral and written public statements concerning our expected future operations and other developments. You are cautioned that, while forward-looking statements reflect our good faith belief and best judgment based upon current information, they are not guarantees of future performance and are subject to known and unknown risks and uncertainties. These risks and uncertainties could cause actual results to differ materially from expectations. Any forward-looking statements, whether made in this report or elsewhere, should be considered in context with the risk factors discussed or incorporated by reference in this report and the various disclosures made by us about our businesses in our various public reports including but not limited to forms 10Q and 10K filed with the United States Securities and Exchange Commission.

For more information please contact: Mark Koenig, Director of Investor Relations, Rentech, Inc. at 303-298-8008 or E-mail at [e-mail], or see the Company's web site at: www.rentechinc.com.

SOURCE Rentech, Inc.


CONTACT: Mark Koenig, Director of Investor Relations of Rentech, Inc.,
[phone], [e-mail]

URL: http://www.rentechinc.com