Stain and rust removing composition

• US 3,183,191 A
• Filed: 04/19/1960
• Issued: 05/11/1965
• Est. Priority Date: 04/19/1960
• Status: Expired due to Term

• Current Assignee: Clifford C. Hach
• Original Assignee: Clifford C. Hach
• Inventors: Hach, Clifford C.
• Application Number:
  US04/023,190
• Time in Patent Office: 1,848 Days
• US Class Current: 510/363
• CPC Class Codes: B01J 49/60 Cleaning or rinsing ion-exchange beds
• CPC Class Codes: F28G 9/00 Cleaning by flushing or washing, e.g. with chemical solvents appliances using jets of fluid for removing debris F28G1/16, F28G3/16

Claims

1. A RUST STAIN REMOVING COMPOSITION CONSISTING ESSENTIALLY OF ABOUT 40% BY WEIGHT SODIUM HYDROSULFITE AND ABOUT 60% BY WEIGHT SODIUM BISULFITE.

4. A COMPOSITION CONSISTING ESSENTIALLY OF SURFACE ACTIVE AGENT AN AMOUNT OF FROM ABOUT 0.5 TO ABOUT 20% BY WEIGHT OF THE RUST STAIN REMOVING COMPOSITION OF CLAIM 1.