# US 9,521,788 B2 · Mobile device cover with detachable EMF blocker > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,521,788 B2 - Document ID: US9521788B2 - Status: Granted - Kind: B2 - Application number: 14/457,081 - Filed: 2014-08-11 - Published: 2015-02-12 - Granted: 2016-12-13 - Earliest claimed: 2013-08-09 - Assignees: Prince Lionheart, Inc. - Applicants: Prince Lionheart, Inc. - Inventors: Kelly McConnell - Web page: https://patentgrep.com/patent/US9521788B2 ## CPC - A61N 1/16: Screening or neutralising undesirable influences from {or using,} atmospheric or terrestrial radiation or fields {(using atmospheric electricity or earth currents H05F3/00)} - A41D 31/32: Retroreflective - G06F 1/1656: {Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203)} - H05K 9/00: Screening of apparatus or components against electric or magnetic fields (devices for absorbing radiation from an antenna H01Q17/00) - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) - A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract An EMF blocker having a blocking shield made of a material to sufficiently block EMF radiation emitted from electronic devices. The EMF blocker has necessary coupling mechanism to detachably couple to the electronic device so that an ideal relative positioning between the electronic device and the EMF blocker is ensured. The EMF blocker also has necessary coupling mechanism to couple to a user of the electronic device to the EMF blocker. The EMF blocker can be in the form of a bib, an apron, a blanket, an article of clothing, a panel. The electronic device can be any mobile electronic device, laptop computer, or even a desktop computer. ## Claims ### Claim 1 An accessory to an electronic device, wherein the electronic device is a cellular phone, a tablet computer, a laptop computer, a portable DVD player, a portable video game player, or a desktop computer, and wherein the accessory detachably attaches to the electronic device and minimizes impact of electromagnetic field (EMF) radiation to a user emitted from the electronic device, the accessory comprising: a blocking shield detachably coupled to the electronic device allowing a user to use the electronic device while the electronic device is attached to the blocking shield; wherein the blocking shield is in a form of at least one selected from a group consisting of a blanket, an article of clothing, a bib, an apron, a panel, a case; and wherein a EMF radiation-blocking material is embedded in at least part of the blocking shield; wherein the blocking shield is at least one of a blanket, an article of clothing, a bib, an apron, and a panel made of soft fabric-like material, and the blocking shield is coupled to the electronic device via a coupling mechanism; wherein the coupling mechanism is at least one of a fastener, a strap, and a case in the blocking shield. ### Claim 2 (depends on 1) The accessory as recited in claim 1, wherein the blocking shield is coupled to the electronic device via a fastener, wherein the fastener is coupled to the blocking shield and is at least one selected from a group consisting of a suction cup, a button, a clip, a snap, a hook-and-loop fastener, a magnet, an elastic band, a receiving slot to receive and keep the electronic device at an angle, a flip up frame kickstand, and a material to secure the electronic device in place by friction. ### Claim 3 (depends on 2) The accessory as recited in claim 2, wherein the blocking shield is sufficiently long to cover the user's shoulders and genital area. ### Claim 4 (depends on 2) The accessory as recited in claim 2, further comprising a neck guard as part of the blocking shield, to sufficiently cover at least a front part of the user's neck, when the blocking shield is also covering over the user's shoulders. ### Claim 5 (depends on 4) The accessory as recited in claim 4, wherein the article of clothing is a reverse cape, a costume. ### Claim 6 (depends on 1) The accessory as recited in claim 1, wherein the blocking shield attaches to the user via at least one of a wearable sleeve, a strap, and a weighted flap. ### Claim 7 (depends on 6) The accessory as recited in claim 6, wherein the coupling mechanism is disposed at a mid-region of the blocking shield. ### Claim 8 (depends on 6) The accessory as recited in claim 6, wherein the blocking shield is sufficiently long to cover both the user's shoulders and genital region. ### Claim 9 (depends on 1) The accessory as recited in claim 1, wherein the electronic device is a mobile electronic device, and wherein the blocking shield is coupled to the mobile electronic device via the case, the case encloses at least a part of the mobile electronic device, and the case is detachably attached to the blocking shield. ### Claim 10 (depends on 1) The accessory as recited in claim 1, wherein the electronic device is a mobile electronic device, and wherein the blocking shield is a case, the case encloses at least a part of the mobile electronic device.