Invention Grant
- Patent Title: Apparatus and method for air freshening
-
Application No.: US16795612Application Date: 2020-02-20
-
Publication No.: US11712493B2Publication Date: 2023-08-01
- Inventor: Bee Ting Low , Qunhui Guo , Luciano M. Parrinello
- Applicant: The Procter & Gamble Company
- Applicant Address: US OH Cincinnati
- Assignee: The Procter & Gamble Company
- Current Assignee: The Procter & Gamble Company
- Current Assignee Address: US OH Cincinnati
- Agent Carolyn S. Powell; George H. Leal; Abbey A. Lopez
- Main IPC: A61L9/12
- IPC: A61L9/12 ; A61L9/01 ; B60H3/00

Abstract:
An apparatus for air freshening in an interior occupancy space. The apparatus has a reservoir containing a volatile composition for air freshening and/or malodor removal and a composite membrane in fluid communication with the volatile composition. The composite membrane has a first side facing the reservoir and a second side opposite the first side. At least one of the first side and the second side has a diffusion regulating coating, the diffusion regulating coating including a hydrophobic/oleophobic material having at least one fluoro-alkyl group. The volatile composition includes at least 20% of perfume raw materials by weight of the composition, the at least 20% of perfume raw materials having an average vapor pressure equal to or greater than 0.01 torr at 25 degrees Celsius. The apparatus has an average vapor release rate from 0.2 mg/hr*cm2 to 5 mg/hr*cm2 at an air flow rate of 5 m/s and a temperature of 21 degrees Celsius.
Public/Granted literature
- US20200276352A1 APPARATUS AND METHOD FOR AIR FRESHENING Public/Granted day:2020-09-03
Information query
IPC分类: