Patents by Inventor Yizhou CHAO

Yizhou CHAO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250034485
    Abstract: A solid fabric softening composition is disclosed comprising a disintegrant system and from 5 to 65% by weight of a quaternary ammonium compound having a structure represented by formula (I): (R1)(R2)—N+—[(CH2)n—Z—R3][(CH2)m—Y—R4]A?, wherein each of R1 and R2 is independently a C1-C4 alkyl group or a C2 to C4 alkenyl group; each R3 and R4 is independently a C7 to C27 alkyl group or alkenyl group; each of Z and Y is independently —O—(O)C— or —C(O)—O—; m and n are each independently a number from 1 to 4; A? is an anionic counterion selected from methyl sulfate, ethyl sulfate, methanesulfonate, ethanesulfonate, sulfate, phosphate, nitrate, formate, carbonate, benzoate, tosylate, acetate, lactate, citrate, chloride, bromide, fluoride, iodide, and mixtures thereof, wherein the disintegrant system comprises a combination of salt and acid; and wherein the composition is in the form of a tablet.
    Type: Application
    Filed: September 20, 2022
    Publication date: January 30, 2025
    Applicant: Conopco, Inc., d/b/a UNILEVER
    Inventors: Yizhou CHAO, Yanchao CHEN, Na XU, Minhua ZHANG
  • Publication number: 20240392213
    Abstract: A solid fabric softening composition is disclosed comprising from 35 to 60% by weight of a disintegrant system and a quaternary ammonium compound having a structure represented by formula (I): (R1)(R2)N+(R3)(R4) A?, wherein each R1 and R2 is independently a C1 to C4 alkyl group or a C2 to C4 alkenyl group: each of R3 and R4 is independently a linear or branched C16 to C22 alkyl or alkenyl group: A? is an anionic counterion selected from a halide, alkyl sulfate and mixtures thereof; wherein the disintegrant system comprises a combination of salt and acid.
    Type: Application
    Filed: September 20, 2022
    Publication date: November 28, 2024
    Applicant: Conopco, Inc., d/b/a UNILEVER
    Inventors: Yizhou CHAO, Yanchao CHEN, Na XU, Minhua ZHANG