EP1038580A1 — Ammonium ion adsorption process using zirconium silicate and zirconium germanate molecular sieves
Assigned to Honeywell UOP LLC · Expires 2000-09-27 · 26y expired
What this patent protects
Ammonium ions are selectively removed from an aqueous stream by contacing the stream at adsorption conditions with a new family of crystalline molecular sieves having a microporous structure of ZrO 3 octahedral units, and at least one of SiO 2 tetrahedral units and GeO 2 tetra…
USPTO Abstract
Ammonium ions are selectively removed from an aqueous stream by contacing the stream at adsorption conditions with a new family of crystalline molecular sieves having a microporous structure of ZrO 3 octahedral units, and at least one of SiO 2 tetrahedral units and GeO 2 tetrahedral units which can, optionally, contain M metals such as titanium, niobium, or tin. These novel molecular sieves adsorbents are prepared hydrothermally from a reaction mixture composed of reactive sources of the components.
Drugs covered by this patent
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
Track this patent
Get a daily-checked alert when vulnerability score, expiry, classification, or assignee changes. Email, Slack, or Teams delivery. Pro: 50 watches, Free: 3.