Gas phase permeable filter
Patent 4227904 Issued on October 14, 1980. Estimated Expiration Date: 
September 8, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 8, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2159121 2166366 2746608 2764251 2825424 3006346 3019127 3568416 3747773 InventorsAssigneeApplicationNo. 05/940721 filed on 09/08/1978US Classes:96/139, Including baffle for modifying gas flow (e.g., flow vanes, diffuser, etc.)55/487, Differing mesh sizes55/498, Spiral or cylindrical55/518, Between perforated plates55/520, SPIRAL FILTER MEDIA55/524With coating, impregnant, or bonding agentExaminersPrimary: Nozick, BernardAttorney, Agent or FirmInternational ClassesB01D 46/00 (20060101)B01D 46/24 (20060101) B01D 46/10 (20060101) AbstractDescribed is a gas phase permeable filter and method for making same comprising the steps:1. Providing a gas phase permeable substrate having opposite surfaces;2. Applying an adhesive to one or both of the surfaces of the substrate;3. Applying particulate gas phase odor-removing means to the adhesive coated surface or surfaces of the substrate;4. Drying the adhesive; and5. Assembling the substrate in a desired filter configuration wherein the outer surface of the filter is a surface of the substrate free of particulate gas phase odor-removing means and the inner surface of the filter is a surface of the substrate coated with the particulate gas phase odor-removing means adhesively secured thereto. | |
