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Hydrogen Storage And Supply Method

Patent No. EP1735236 (titled "Hydrogen Storage And Supply Method") was filed by Praxair Technology on Mar 22, 2005. The application was issued on Feb 14, 2018.

Patent Summary

A method for storing and supplying gaseous hydrogen to a pipeline under a product purity specification comprises compressing a gaseous hydrogen stream to 15.3 MPa (2200 psig) and introducing it into a salt cavern for storage. A crude hydrogen stream is subsequently recovered from the cavern and purified by removing at least carbon dioxide and water vapor to meet or exceed the purity specification. The resulting hydrogen product stream is reduced in pressure to between 4.2 MPa (600 psig) and 5.6 MPa (800 psig) before being introduced into the pipeline. This process addresses contamination occurring during salt cavern storage, ensuring the supplied hydrogen meets required purity levels, potentially including the removal of hydrogen sulfide via coalescing filters and adsorption.

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Patent Oppositions (2)

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.

CompanyOpposition DateRepresentative
DEEP.KBB GMBHNov 13, 2018RITTNER
LAIR LIQUIDENov 12, 2018AIR LIQUIDE

Dossier Documents

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EP1735236

PRAXAIR TECHNOLOGY
Application Number
EP05725984A
Filing Date
Mar 22, 2005
Status
Opposition Rejected
Oct 15, 2021
Publication Date
Feb 14, 2018
External Links
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