Silox Canada Inc.

Canada

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C01B 17/62 - Methods of preparing sulfites in general 1
C01B 17/66 - Dithionites 1
C01D 5/14 - Preparation of sulfites 1
C30B 29/46 - Sulfur-, selenium- or tellurium-containing compounds 1
C30B 7/08 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions by cooling of the solution 1

1.

Process and system for producing sodium hydrosulfite crystals

      
Application Number 17610944
Grant Number 11472704
Status In Force
Filing Date 2020-06-04
First Publication Date 2022-05-12
Grant Date 2022-10-18
Owner SILOX CANADA INC. (Canada)
Inventor Douville, Patrice

Abstract

A process and a system allow producing sodium hydrosulfite crystals. A suspension containing sodium hydrosulfite is provided. The sodium hydrosulfite crystals are separated from a remainder of the suspension. The separated sodium hydrosulfite crystals are cooled to a stable temperature. The suspension may be obtained by raising a pH and lowering a temperature of a solution containing sodium hydrosulfite. A partial precipitation of the sodium hydrosulfite to form the crystals may be facilitated by addition of a nucleating agent to the suspension.

IPC Classes  ?

2.

PROCESS AND SYSTEM FOR PRODUCING SODIUM HYDROSULFITE CRYSTALS

      
Document Number 03140232
Status In Force
Filing Date 2020-06-04
Open to Public Date 2020-12-17
Grant Date 2022-10-04
Owner SILOX CANADA INC. (Canada)
Inventor Douville, Patrice

Abstract

A process and a system allow producing sodium hydrosulfite crystals. A suspension containing sodium hydrosulfite is provided. The sodium hydrosulfite crystals are separated from a remainder of the suspension. The separated sodium hydrosulfite crystals are cooled to a stable temperature. The suspension may be obtained by raising a pH and lowering a temperature of a solution containing sodium hydrosulfite. A partial precipitation of the sodium hydrosulfite to form the crystals may be facilitated by addition of a nucleating agent to the suspension.

IPC Classes  ?

  • C01D 5/14 - Preparation of sulfites
  • C01B 17/62 - Methods of preparing sulfites in general
  • C30B 7/08 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions by cooling of the solution
  • C30B 29/46 - Sulfur-, selenium- or tellurium-containing compounds

3.

HY BRITE

      
Application Number 100884800
Status Registered
Filing Date 1999-03-17
Registration Date 2001-05-30
Owner SILOX CANADA INC. (Canada)
NICE Classes  ? 01 - Chemical and biological materials for industrial, scientific and agricultural use

Goods & Services

(1) Bleaching compounds for industrial and commercial use, namely a sodium hydrosulfite based bleaching compound containing proprietary blend of chelates and alkaline stabilizers. (2) Bleaching preparations for industrial and commercial purposes for use in pulp and paper industry, textile industry and kaolins industry.

4.

HY BRITE

      
Serial Number 75469330
Status Registered
Filing Date 1998-04-17
Registration Date 2003-03-11
Owner SILOX CANADA INC. (Canada)
NICE Classes  ? 01 - Chemical and biological materials for industrial, scientific and agricultural use

Goods & Services

Chemicals, namely, bleaching compounds for industrial and commercial use, namely a sodium hydrosulfite based bleaching compound containing proprietary blend of chelates and alkaline stabilizers for use in the pulp and paper, textile, and kaolin industries