IP Library › Granted Patent US 12,435,190
Granted Patent B1
US 12,435,190 · App. 19/083,811 · Granted Oct 7, 2025

Plastic-free dishwasher cleaning product

Inventors: Darren Gross (Midland, MI); Laura Hinojosa (Kitchener, CA); Zenith Phillips (Calgary, CA); Iryna Radziievska (Calgary, CA)
Assignee: Tru Earth Environmental Products Inc.
C08J3/203B29B7/283B29C35/0266B29C37/0092B29C41/003B29C41/02B29C41/42B29C41/46C08K3/26C08K5/053C08K5/098C08K5/138C11D17/042B29K2001/08B29K2033/04B29K2995/0062C08J2301/02C08J2433/02C08K2003/262C11D2111/14
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Quick Facts
Patent No.
US 12,435,190
App. No.
19/083,811
Granted
Oct 7, 2025
Kind
B1
Abstract

Glycerin and sodium polyacrylate may be mixed at a first mixing speed for a first mixing time. Free water and a fibrillated cellulose mixture may be added to second mixer and mixed at a second mixing time speed for a second mixing time. The glycerin and the sodium polyacrylate may be mixed with the free water and fibrillated cellulose mixture at a third mixing speed for a third mixing time. One or more of sodium citrate, sodium bicarbonate, and sodium benzoate may be added and mixed at a fourth mixing speed for a fourth mixing time. Sodium carbonate may be added and mixed at a fifth mixing speed for a fifth mixing time. A surfactant mixture and optionally fragrances may be added and mixed at a sixth mixing speed for a sixth mixing time to form a final mixture, which may be transferred to molds, dehydrated, and removed.

Claims (38)

1. A method of forming a final mixture for a dissolvable cleaning product, the method comprising:

adding glycerin and sodium polyacrylate to a first mixer and mixing at a first mixing speed for a first mixing time;

adding water and a fibrillated cellulose mixture to a second mixer and mixing at a second mixing time speed for a second mixing time;

adding the glycerin and the sodium polyacrylate to the second mixer and mixing at a third mixing speed for a third mixing time;

adding one or more of sodium citrate, sodium bicarbonate, and sodium benzoate to the second mixer and mixing at a fourth mixing speed for a fourth mixing time;

adding sodium carbonate to the second mixer and mixing at a fifth mixing speed for a fifth mixing time; and

adding a surfactant mixture to the second mixer and mixing at a sixth mixing speed for a sixth mixing time to form the final mixture.

2. The method of claim 1 , further comprising:

transferring the final mixture to one or more molds;

dehydrating the final mixture in the one or more molds to form the dissolvable cleaning product; and

removing the dissolvable cleaning product from the one or more molds.

3. The method of claim 2 , wherein the dehydrating reduces a total moisture content of the final mixture to a range of approximately 20 wt % to approximately 30 wt %.

4. The method of claim 1 , further comprising:

transferring the final mixture to one or more molds;

allowing the final mixture to cure in the one or more molds such that a skin forms, the skin having a consistency that is firmer than the final mixture;

removing the cured final mixture from the one or more molds; and

dehydrating the cured final mixture to form the dissolvable cleaning product.

5. The method of claim 4 , wherein the dehydrating reduces a total moisture content of the final mixture to a range of approximately 20 wt % to approximately 30 wt %.

6. The method of claim 1 , wherein the glycerin is approximately 8.65 wt % to approximately 13.00 wt % of the final mixture.

7. The method of claim 1 , wherein the sodium polyacrylate is approximately 0.87 wt % to approximately 1.30 wt % of the final mixture.

8. The method of claim 1 , wherein the free water is approximately 13.90 wt % to approximately 20.89 wt % of the final mixture.

9. The method of claim 1 , wherein the fibrillated cellulose mixture is approximately 8.04 wt % to approximately 12.08 wt % of the final mixture.

10. The method of claim 1 , wherein the sodium citrate is approximately 13.48 wt % to approximately 20.25 wt % of the final mixture.

11. The method of claim 1 , wherein the sodium bicarbonate is approximately 9.52 wt % to approximately 14.30 wt % of the final mixture.

12. The method of claim 1 , wherein the sodium benzoate is approximately 0.22 wt % to approximately 0.33 wt % of the final mixture.

13. The method of claim 1 , wherein the sodium carbonate is approximately 20.18 wt % to approximately 31.77 wt % of the final mixture.

14. The method of claim 1 , wherein the surfactant mixture comprises an alkaline stable compound configured to deliver low foam detergency.

15. The method of claim 1 , wherein the surfactant mixture is approximately 4.02 wt % to approximately 6.04 wt % of the final mixture.

16. The method of claim 1 , further comprising:

adding one or more fragrances with the surfactant mixture, the one or more fragrances approximately 0.13 wt % to approximately 0.19 wt % of the final mixture.

17. The method of claim 1 , wherein:

one or more of the first mixing speed and the third mixing speed is approximately 113 rotations per minute (rpm); and

one or more of the second mixing speed, the fourth mixing speed, the fifth mixing speed, and the sixth mixing speed is approximately 168 rpm.

18. The method of claim 1 , wherein:

one or more of the first mixing time, the fourth mixing time, and the sixth mixing time is approximately 5 min;

the second mixing time is approximately 17.5 min;

the third mixing time is approximately 3 min; and

the fifth mixing time is approximately 10 min.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 25, 2025
From: GROSS, DARREN; HINOJOSA, LAURA; PHILLIPS, ZENITH; RADZIIEVSKA, IRYNA
To: TRU EARTH ENVIRONMENTAL PRODUCTS INC.
Reel/Frame 071512/0597 →
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