US5687470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming an RF shielded enclosure
Assignee: Nokia Technologies Oy
•
Filing: 1992-11-05
•
Granted: 1997-11-18
•
Expires: 2012-11-05
Abstract
Abstract A method of providing a cover on a substrate to shield against radio frequency radiation, wherein an electrically conductive material--such as a conductive, possibly adhesive, paste--which shields against RF radiation is applied in a fluid state to the desired area of the substrate. The substrate may be a printed circuit board (1) or a base member of an RF housing.
Inventors
- 👤 Mikko Veijo Tapani Halttunen
- 👤 Markku Gunnar Kankaanpaa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:23
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/002; H05K9/0022; H05K9/0037; Y; Y10; Y10S; Y10S174/00; Y10S174/35; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
102 words
A method of connecting two members to each other to form an RF shielded enclosure comprising steps of: providing a first one of the two members with a plurality of recesses along an edge of a wall of the first member; applying an electrically conductive fluid at an area of a second one of the two members that is intended to mate with the edge of the first member's wall; and connecting the two members to each other with the electrically conductive fluid being sandwiched between the two members and extending, at least partially, into the recesses along the first member's wall.
Claim 2
Independent Claim
102 words
A method of connecting two members to each other to form an RF shielded enclosure comprising steps of: providing a first one of the two members with a plurality of recesses along an edge of a wall of the first member; applying an electrically conductive fluid at an area of a second one of the two members that is intended to mate with the edge of the first member's wall; and connecting the two members to each other with the electrically conductive fluid being sandwiched between the two members and extending, at least partially, into the recesses along the first member's wall.
Claim 3
Dependent Claim
28 words
A method as in claim 1 wherein the step of applying the electrically conductive fluid comprises applying an electrically conductive paste at the area of the second member.
Claim 4
Dependent Claim
22 words
A method as in claim 1 wherein the step of applying the electrically conductive fluid comprises applying an RF shielding adhesive material.
Claim 5
Dependent Claim
22 words
A method as in claim 1 wherein the step of applying the electrically conductive fluid comprises printing the fluid onto the area.
Claim 6
Dependent Claim
22 words
A method as in claim 1 wherein the step of applying the electrically conductive fluid comprises extruding the fluid onto the area.
Claim 7
Independent Claim
84 words
A method of connecting two members to each other to form an RF shielded enclosure comprising steps of: providing a first one of the two members with a plurality of recesses along an edge of a wall of the first member; applying an electrically conductive fluid along the edge of the wall; and connecting the two members to each other with the electrically conductive fluid being sandwiched between the two members and extending, at least partially, into the recesses along the first member's wall.
Claim 8
Independent Claim
84 words
A method of connecting two members to each other to form an RF shielded enclosure comprising steps of: providing a first one of the two members with a plurality of recesses along an edge of a wall of the first member; applying an electrically conductive fluid along the edge of the wall; and connecting the two members to each other with the electrically conductive fluid being sandwiched between the two members and extending, at least partially, into the recesses along the first member's wall.
Claim 9
Dependent Claim
27 words
A method as in claim 6 wherein the step of applying the electrically conductive fluid comprises applying an electrically conductive paste at the edge of the wall.
Claim 10
Dependent Claim
22 words
A method as in claim 6 wherein the step of applying the electrically conductive fluid comprises applying an RF shielding adhesive material.
Claim 11
Dependent Claim
22 words
A method as in claim 6 wherein the step of applying the electrically conductive fluid comprises printing the fluid onto the wall.
Claim 12
Dependent Claim
22 words
A method as in claim 6 wherein the step of applying the electrically conductive fluid comprises extruding the fluid onto the wall.
References Cited (Backward Citations)
US3469015A
Cited
GB1282697A
Cited
US4567318A
Cited
JPS6286841A
Cited
US4868637A
Cited
GB2187893A
Cited
US4739453A
Cited
GB2200253A
Cited
EP0275171A2
Cited
GB2209436A
Cited
US4999136A
Cited
GB2237147A
Cited
FI915242L
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-11-17 | 2001-05-19 | 2001-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-17 | 2005-05-19 | 2005-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-17 | 2009-05-19 | 2009-11-18 | $7700.00 | Window Closed / Lapsed |