This inventor holds 1 USPTO granted patent, plus 1 CIPO patent and 1 EPO patent. Top assignee: Exxonmobil Upstream Research Company. Active years: 2009.
Company Filing History:
Years Active: 2009
Title: John D Walter: Innovator in LNG Production Technology
Introduction
John D Walter is a notable inventor based in Longview, TX (US). He has made significant contributions to the field of natural gas liquefaction through his innovative patent. His work focuses on enhancing the efficiency of LNG production, which is crucial for meeting energy demands.
Latest Patents
Walter holds a patent for a "Method for efficient nonsynchronous LNG production." This invention features a drive system for a refrigeration compressor used in natural gas liquefaction plants. It allows for the maintenance of desired compressor speed and maximum turbine efficiency across varying ambient temperature conditions. The system utilizes a gas turbine paired with an electric starter motor, which is located on a common drive shaft between the turbine and the compressor. A variable frequency drive (VFD) is integrated to ensure smooth startups and to convert excess turbine mechanical power into electrical power, which can be delivered to the grid. Additionally, pulse width modulation technology is employed to minimize harmonic distortion in the VFD's output. The starter motor also serves as a helper motor when turbine output is insufficient to meet throughput requirements.
Career Highlights
Walter is currently associated with ExxonMobil Upstream Research Company, where he continues to develop innovative solutions in the energy sector. His expertise in LNG production technology has positioned him as a valuable asset in his field.
Collaborations
Walter has collaborated with notable colleagues, including Stephen Wright and Peter C Rasmussen, contributing to advancements in their shared field of expertise.
Conclusion
John D Walter's contributions to LNG production technology exemplify the impact of innovation in the energy sector. His patent reflects a commitment to improving efficiency and sustainability in natural gas liquefaction.