A method for dry-cleaning articles such as fabrics and clothing in carbon dioxide comprises contacting an article to be cleaned with a liquid dry cleaning composition for a time sufficient to clean the fabric. The liquid dry-cleaning composition comprises a mixture of carbon dioxide, water, and an end-functional polysiloxane surfactant. After the contacting step, the article is separated from the liquid dry cleaning composition. The method is preferably carried out at ambient temperature.

Claims

4 · 1 independent · depth 2

4 granted claims

›1.independentA method for cleaning garments or fabrics in carbon dioxide, comprising: contacting a garment or fabric article to be cleaned with a liquid dry cleani…+3

Classifications

1 codes

USPC · US Patent Classification

814/2

Claim changes

Soon

Coming soonHow the claims changed between publication and grant

See which claims were amended, added or cancelled during examination, with every added and removed word marked.

AmendedAddedCancelledUnchanged

The published claims of this patent are not paired with the granted ones in what we hold.

File wrapper

Pendency

1.3 y

473 days filing → grant

Office actions

on the grant's record

Examiner

Caroline D. Liott

art unit —

Law firm

Law firm · Log in to unlock

Citations: 28 back · 7 forward

Term & fees

See the term timeline — pendency span, in-force span, the maintenance fees paid and both computed expiry dates.

Validity challenges

See the validity challenges on record — reexaminations, IPRs and PGRs, with their institution decisions and outcomes.

Citations

See every patent this one cites and every patent that cites it back — publication, assignee, and how each one was found.