The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 2026
Filed:
Jan. 12, 2023
Lummus Technology Llc, Houston, TX (US);
Sudipto Chakraborty, Houston, TX (US);
Liang Chen, Houston, TX (US);
Te-Chun Chu, Houston, TX (US);
Manoj Som, Houston, TX (US);
David Lee Guymon, Houston, TX (US);
Daniel T. Fernald, Houston, TX (US);
Richard John Jibb, Houston, TX (US);
Ron Herbanek, Houston, TX (US);
Lummus Technology LLC, Houston, TX (US);
Abstract
Systems and processes for pyrolyzing waste plastics, including, in one or more heating stages, heating a waste plastic from an initial temperature to a peak pyrolysis temperature, and, in a final pyrolysis stage, providing heat input sufficient to maintain a temperature of the waste plastic at a pyrolysis reaction temperature less than the peak pyrolysis temperature and maintaining the waste plastic at the pyrolysis reaction temperature for a time period to convert a portion of the waste plastic to a pyrolyzed product and a pitch. The process further includes recovering the pyrolyzed product and recovering the pitch.