US20030011991A1 - Clip for heat sink - Google Patents
Clip for heat sink Download PDFInfo
- Publication number
- US20030011991A1 US20030011991A1 US09/894,094 US89409401A US2003011991A1 US 20030011991 A1 US20030011991 A1 US 20030011991A1 US 89409401 A US89409401 A US 89409401A US 2003011991 A1 US2003011991 A1 US 2003011991A1
- Authority
- US
- United States
- Prior art keywords
- clip
- spring portion
- heat sink
- opposite
- connect
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/40—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs
- H01L23/4093—Snap-on arrangements, e.g. clips
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
Definitions
- the present invention relates to clips securing heat sinks onto heat-generating electronic devices, and particularly to clips which readily and securely attach a heat sink to an electronic device.
- FIG. 4 shows a conventional clip 1 .
- the clip 1 comprises a central press portion 2 , a pair of spring portions 3 respectively extending in opposite directions from the press portion 2 , and a pair of legs 4 respectively depending from the spring portions 3 .
- Each leg 4 defines an opening 5 for engaging with a catch formed on a socket, to thereby secure a heat sink to an electronic device.
- This kind of clip 1 is integrally formed by stamping and bending.
- the lengths of the legs 4 of the clip 1 are not adjustable.
- the fixing force of the clip 1 cannot be adjusted to fit heat sinks of varying size and weight.
- the clip 1 is not very versatile.
- the clip 1 must be attached to a heat sink prior to installation of a fan. This can be unduly inconvenient, particularly for mass production on an assembly line.
- the legs 4 of the clip 1 are prone to plastic deformation, particularly after prolonged use of the clip 1 . The clip 1 is then not able to securely attach a heat sink to an electronic device.
- an object of the present invention is to provide a clip which readily and securely attaches a heat sink to an electronic device.
- Another object of the present invention is to provide a clip which has adjustable fixing force according to the particular heat sink being used.
- a clip in accordance with the present invention comprises a first member and a second member attached to the first member.
- the first member comprises a spring portion, a first leg extending from one end of the spring portion and adapted to engage with a socket, and a handle extending from an opposite end of the spring portion.
- a pair of flanges extends from opposite side edges of the spring portion. Both flanges are folded back one over the other and over the spring portion, for reinforcing the clip.
- the handle defines a cutout comprising a receiving section and a locking section.
- the second member comprises a connect portion forming a plurality of teeth on opposite edges thereof, and a second leg. The connect portion is first received in the receiving section and then engages in the locking section. A slot is defined through the connect portion for facilitating elastic deformation of the connect portion.
- the effective length of the second member is adjustable according to the particular teeth selected to engage in the locking section.
- FIG. 1 is an exploded view showing a clip of the present invention for attaching a heat sink to a central processing unit mounted on a socket, the heat sink having a fan attached thereon;
- FIG. 2 is an exploded view of the clip of FIG. 1;
- FIG. 3 is an assembled view of FIG. 1;
- FIG. 4 is a perspective view of a conventional clip.
- FIG. 1 is an exploded view showing a clip 10 of the present invention for attaching a heat sink 22 to a central processing unit (CPU) 30 mounted on a socket 40 .
- the heat sink 22 has a fan 24 attached thereon.
- the heat sink 22 comprises a base 222 having a bottom face (not labeled), and a top face (not labeled) opposite to the bottom face.
- a plurality of fins 224 extends upwardly from the top face of the base 222 .
- a channel 226 is defined between two adjacent central fins 224 .
- the fan 24 is attached on the fins 224 of the heat sink 22 .
- a pair of catches 44 (one not visible) is formed on opposite sides of the socket 40 respectively.
- the clip 10 in accordance with the present invention comprises a first member 12 and an second member 14 attached to the first member 12 .
- the first member 12 comprises a central spring portion 122 , a first leg 126 extending downwardly from one end of the spring portion 122 , and a handle 128 extending from an opposite end of the spring portion 122 .
- a pair of flanges 130 extends from opposite side edges of the spring portion 122 . Both flanges 130 are folded back one over the other and over a top surface of the spring portion 122 , for reinforcing the clip 10 .
- a first aperture 132 is defined in the first leg 126 .
- a cutout 134 is defined in the handle 128 .
- the cutout 134 comprises a receiving section 136 and a locking section 138 .
- the locking section 138 is smaller than the receiving section 136 , is disposed inwardly from the receiving section 136 , and is in communication with the receiving section 136 .
- a protrusion 139 is formed on one edge of the handle 128 at the cutout 134 .
- the protrusion 139 is opposite to the locking section 138 , and extends into the cutout 134 toward the locking section 138 .
- the second member 14 comprises a second leg 142 , and a connect portion 144 extending upwardly from the second leg 142 .
- a second aperture 150 is defined in the second leg 142 .
- the connect portion 144 forms a plurality of symmetrically opposite teeth 148 on opposite edges thereof, for entering into the receiving section 136 and engaging in the locking section 138 of the cutout 134 of the first member 12 .
- a distance between outmost ends of topmost teeth 148 is greater than a corresponding width of the receiving section 136 , for preventing the second member 14 from slipping out of the cutout 134 .
- a slender V-shaped slot 146 is defined through a middle of the connect portion 144 from a top edge thereof, for facilitating elastic deformation of the connect portion 144 .
- the first member 12 of the clip 10 is passed through the channel 226 of the heat sink 22 .
- the connect portion 144 of the second member 14 is inserted into the receiving section 136 of the first member 12 from under the handle 128 .
- the connect portion 144 elastically deforms to allow the topmost teeth 148 to engage with the handle 128 in the receiving section 136 of the first member 12 .
- the protrusion 139 is received in the slot 146 , thereby pre-positioning the connect portion 144 in the cutout 134 .
- the combined heat sink 22 , fan 24 and clip 10 is then placed onto the CPU 30 .
- the catches 44 of the socket 40 are loosely received in the first and second apertures 132 , 150 of the first and second legs 126 , 142 respectively.
- a pair of directly opposite teeth 148 is selected according to the particular dimensions of the heat sink 22 .
- the handle 128 is depressed and the connect portion 144 is simultaneously pushed toward the locking section 138 of the first member 12 , such that the pair of selected teeth 148 engage at the locking section 138 .
- the catches 44 of the socket 40 are thereby firmly engaged by the first and second legs 126 , 142 at the first and second apertures 132 , 150 .
- the heat sink 22 with the fan 24 attached thereon is thus firmly fixed on the CPU 30 .
- an effective operating length of the second member 14 between the second leg 142 and the engagement of the connect portion 144 in the locking section 138 is adjustable. Adjustment varies according to which pair of directly opposite teeth 148 engages in the locking section 138 .
- the fixing force of the clip 10 is adjustable according to the particular heat sink 22 being used. Accordingly, the clip 10 can securely attach a variety of heat sinks 22 onto the CPU 30 .
- the flanges 130 of the first member 12 reinforce the clip 10 . Thus the clip 10 is able to sustain a large fixing force.
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
Description
- 1. Field of the Invention
- The present invention relates to clips securing heat sinks onto heat-generating electronic devices, and particularly to clips which readily and securely attach a heat sink to an electronic device.
- 2. Prior Art
- Computer electronic devices such as central processing units (CPUs) frequently generate large amounts of heat, which can destabilize operation and cause damage. A heat sink placed in thermal contact with an electronic device mounted on a socket transfers heat from the electronic device through conduction. Oftentimes, the heat sink is secured to the electronic device with a clip.
- FIG. 4 shows a
conventional clip 1. Theclip 1 comprises a central press portion 2, a pair ofspring portions 3 respectively extending in opposite directions from the press portion 2, and a pair oflegs 4 respectively depending from thespring portions 3. Eachleg 4 defines anopening 5 for engaging with a catch formed on a socket, to thereby secure a heat sink to an electronic device. - This kind of
clip 1 is integrally formed by stamping and bending. The lengths of thelegs 4 of theclip 1 are not adjustable. Thus the fixing force of theclip 1 cannot be adjusted to fit heat sinks of varying size and weight. In other words, theclip 1 is not very versatile. Furthermore, during assembly, theclip 1 must be attached to a heat sink prior to installation of a fan. This can be unduly inconvenient, particularly for mass production on an assembly line. Moreover, thelegs 4 of theclip 1 are prone to plastic deformation, particularly after prolonged use of theclip 1. Theclip 1 is then not able to securely attach a heat sink to an electronic device. - Accordingly, an object of the present invention is to provide a clip which readily and securely attaches a heat sink to an electronic device.
- Another object of the present invention is to provide a clip which has adjustable fixing force according to the particular heat sink being used.
- To achieve the above-mentioned objects, a clip in accordance with the present invention comprises a first member and a second member attached to the first member. The first member comprises a spring portion, a first leg extending from one end of the spring portion and adapted to engage with a socket, and a handle extending from an opposite end of the spring portion. A pair of flanges extends from opposite side edges of the spring portion. Both flanges are folded back one over the other and over the spring portion, for reinforcing the clip. The handle defines a cutout comprising a receiving section and a locking section. The second member comprises a connect portion forming a plurality of teeth on opposite edges thereof, and a second leg. The connect portion is first received in the receiving section and then engages in the locking section. A slot is defined through the connect portion for facilitating elastic deformation of the connect portion. The effective length of the second member is adjustable according to the particular teeth selected to engage in the locking section.
- Other objects, advantages and novel features of the present invention will be drawn from the following detailed embodiment of the present invention with attached drawings, in which:
- FIG. 1 is an exploded view showing a clip of the present invention for attaching a heat sink to a central processing unit mounted on a socket, the heat sink having a fan attached thereon;
- FIG. 2 is an exploded view of the clip of FIG. 1;
- FIG. 3 is an assembled view of FIG. 1; and
- FIG. 4 is a perspective view of a conventional clip.
- Referring to the attached drawings, FIG. 1 is an exploded view showing a
clip 10 of the present invention for attaching aheat sink 22 to a central processing unit (CPU) 30 mounted on asocket 40. Theheat sink 22 has afan 24 attached thereon. - The
heat sink 22 comprises abase 222 having a bottom face (not labeled), and a top face (not labeled) opposite to the bottom face. A plurality offins 224 extends upwardly from the top face of thebase 222. Achannel 226 is defined between two adjacentcentral fins 224. Thefan 24 is attached on thefins 224 of theheat sink 22. A pair of catches 44 (one not visible) is formed on opposite sides of thesocket 40 respectively. - Referring also to FIG. 2, the
clip 10 in accordance with the present invention comprises afirst member 12 and ansecond member 14 attached to thefirst member 12. Thefirst member 12 comprises acentral spring portion 122, afirst leg 126 extending downwardly from one end of thespring portion 122, and ahandle 128 extending from an opposite end of thespring portion 122. A pair offlanges 130 extends from opposite side edges of thespring portion 122. Bothflanges 130 are folded back one over the other and over a top surface of thespring portion 122, for reinforcing theclip 10. Afirst aperture 132 is defined in thefirst leg 126. Acutout 134 is defined in thehandle 128. Thecutout 134 comprises areceiving section 136 and alocking section 138. Thelocking section 138 is smaller than the receivingsection 136, is disposed inwardly from the receivingsection 136, and is in communication with the receivingsection 136. Aprotrusion 139 is formed on one edge of thehandle 128 at thecutout 134. Theprotrusion 139 is opposite to thelocking section 138, and extends into thecutout 134 toward thelocking section 138. - The
second member 14 comprises asecond leg 142, and aconnect portion 144 extending upwardly from thesecond leg 142. Asecond aperture 150 is defined in thesecond leg 142. The connectportion 144 forms a plurality of symmetricallyopposite teeth 148 on opposite edges thereof, for entering into thereceiving section 136 and engaging in thelocking section 138 of thecutout 134 of thefirst member 12. A distance between outmost ends oftopmost teeth 148 is greater than a corresponding width of thereceiving section 136, for preventing thesecond member 14 from slipping out of thecutout 134. A slender V-shaped slot 146 is defined through a middle of the connectportion 144 from a top edge thereof, for facilitating elastic deformation of theconnect portion 144. - Referring also to FIG. 3, in assembly, the
first member 12 of theclip 10 is passed through thechannel 226 of theheat sink 22. The connectportion 144 of thesecond member 14 is inserted into the receivingsection 136 of thefirst member 12 from under thehandle 128. The connectportion 144 elastically deforms to allow thetopmost teeth 148 to engage with thehandle 128 in thereceiving section 136 of thefirst member 12. Theprotrusion 139 is received in theslot 146, thereby pre-positioning theconnect portion 144 in thecutout 134. The combinedheat sink 22,fan 24 andclip 10 is then placed onto theCPU 30. Thecatches 44 of thesocket 40 are loosely received in the first andsecond apertures second legs opposite teeth 148 is selected according to the particular dimensions of theheat sink 22. Thehandle 128 is depressed and theconnect portion 144 is simultaneously pushed toward thelocking section 138 of thefirst member 12, such that the pair of selectedteeth 148 engage at thelocking section 138. Thecatches 44 of thesocket 40 are thereby firmly engaged by the first andsecond legs second apertures heat sink 22 with thefan 24 attached thereon is thus firmly fixed on theCPU 30. - In the present invention, an effective operating length of the
second member 14 between thesecond leg 142 and the engagement of theconnect portion 144 in thelocking section 138 is adjustable. Adjustment varies according to which pair of directlyopposite teeth 148 engages in thelocking section 138. Thus the fixing force of theclip 10 is adjustable according to theparticular heat sink 22 being used. Accordingly, theclip 10 can securely attach a variety ofheat sinks 22 onto theCPU 30. Furthermore, theflanges 130 of thefirst member 12 reinforce theclip 10. Thus theclip 10 is able to sustain a large fixing force. - It is understood that the invention may be embodied in other forms without departing from the spirit thereof. Thus, the present example and embodiment is to be considered in all respects as illustrative and not restrictive, and the invention is not to be limited to the details given herein.
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/894,094 US6501656B1 (en) | 2001-06-28 | 2001-06-28 | Clip for heat sink |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/894,094 US6501656B1 (en) | 2001-06-28 | 2001-06-28 | Clip for heat sink |
Publications (2)
Publication Number | Publication Date |
---|---|
US6501656B1 US6501656B1 (en) | 2002-12-31 |
US20030011991A1 true US20030011991A1 (en) | 2003-01-16 |
Family
ID=25402599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/894,094 Expired - Fee Related US6501656B1 (en) | 2001-06-28 | 2001-06-28 | Clip for heat sink |
Country Status (1)
Country | Link |
---|---|
US (1) | US6501656B1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090290308A1 (en) * | 2008-05-23 | 2009-11-26 | Comptake Technology Inc. | Heat sink for chips |
US20120125565A1 (en) * | 2010-11-18 | 2012-05-24 | Hon Hai Precision Industry Co., Ltd. | Mounting apparatus for fans |
US20160168412A1 (en) * | 2013-07-22 | 2016-06-16 | Basf Se | A Coating System |
USD783391S1 (en) * | 2015-03-30 | 2017-04-11 | Delta Electronics, Inc. | Clip |
EP3444545A1 (en) * | 2017-08-17 | 2019-02-20 | VALEO AUTOSYSTEMY Sp. Z. o.o. | Heat exchanger module with a bracket for holding a receiver drier |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6871879B2 (en) * | 2000-12-28 | 2005-03-29 | Hon Hai Precision Ind. Co., Ltd. | Fan duct assembly |
US6785136B2 (en) * | 2002-06-05 | 2004-08-31 | Inventec Corporation | Coupling mechanism for radiator |
TWM243900U (en) * | 2003-03-28 | 2004-09-11 | Hon Hai Prec Ind Co Ltd | Clip for heat sink |
US7397663B2 (en) * | 2006-07-28 | 2008-07-08 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Clip for heat dissipation device |
US20090165998A1 (en) * | 2007-12-27 | 2009-07-02 | Hon Hai Precision Industry Co., Ltd. | Heat dissipation device |
CN102065663A (en) * | 2009-11-12 | 2011-05-18 | 富准精密工业(深圳)有限公司 | Fastener and cooling device using same |
US10557493B1 (en) * | 2016-09-21 | 2020-02-11 | Arista Networks, Inc. | Spring fastener |
US10529647B2 (en) * | 2017-05-25 | 2020-01-07 | Cooler Master Co., Ltd. | Retainer |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4054901A (en) * | 1975-10-14 | 1977-10-18 | Thermalloy, Inc. | Index mounting unitary heat sink apparatus with apertured base |
US4557024A (en) * | 1984-02-06 | 1985-12-10 | 501 Evelyn Investments Ltd. | Clamp for hose, tubing, or the like |
DE4204187C2 (en) * | 1992-02-13 | 1993-12-02 | Raymond A Gmbh & Co Kg | Cable duct for receiving cable bundles |
US5600540A (en) * | 1995-05-15 | 1997-02-04 | Blomquist; Michael L. | Heat sink and retainer for electronic integrated circuits |
US5828551A (en) * | 1997-03-04 | 1998-10-27 | Hoshino Kinzoku Koygo Kabushiki Kaisha | Heat sink apparatus for an electronic component |
TW338536U (en) * | 1997-07-12 | 1998-08-11 | Hon Hai Prec Ind Co Ltd | A fastener |
TW335191U (en) * | 1997-07-15 | 1998-06-21 | Hon Hai Prec Ind Co Ltd | Securing device |
US5982620A (en) * | 1998-06-01 | 1999-11-09 | Asia Vital Components Co., Ltd. | CPU casing structure with improved heat dissipator anchoring configuration |
US6229705B1 (en) * | 2000-06-22 | 2001-05-08 | Foxconn Precision Components Co., Ltd. | Clip for securing heat sink to electronic device package |
-
2001
- 2001-06-28 US US09/894,094 patent/US6501656B1/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090290308A1 (en) * | 2008-05-23 | 2009-11-26 | Comptake Technology Inc. | Heat sink for chips |
US20120125565A1 (en) * | 2010-11-18 | 2012-05-24 | Hon Hai Precision Industry Co., Ltd. | Mounting apparatus for fans |
US20160168412A1 (en) * | 2013-07-22 | 2016-06-16 | Basf Se | A Coating System |
USD783391S1 (en) * | 2015-03-30 | 2017-04-11 | Delta Electronics, Inc. | Clip |
EP3444545A1 (en) * | 2017-08-17 | 2019-02-20 | VALEO AUTOSYSTEMY Sp. Z. o.o. | Heat exchanger module with a bracket for holding a receiver drier |
WO2019034643A1 (en) * | 2017-08-17 | 2019-02-21 | Valeo Autosystemy Sp. Z.O.O. | Heat exchanger module with a bracket for holding a receiver drier |
US11454434B2 (en) | 2017-08-17 | 2022-09-27 | Valeo Autosystemy Sp. Z O.O. | Heat exchanger module with a bracket for holding a receiver drier |
Also Published As
Publication number | Publication date |
---|---|
US6501656B1 (en) | 2002-12-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7055589B2 (en) | Clip for heat sink | |
US6501656B1 (en) | Clip for heat sink | |
US6518507B1 (en) | Readily attachable heat sink assembly | |
US4509839A (en) | Heat dissipator for semiconductor devices | |
US6392889B1 (en) | Fastener for heat sink | |
US7375965B2 (en) | Clip and heat dissipation assembly using the same | |
US7796390B1 (en) | Fastener and heat sink assembly having the same | |
US20070263363A1 (en) | Fixing apparatus for heat sink | |
US6343013B1 (en) | Heat sink assembly | |
US6430049B1 (en) | Clip for heat sink | |
US7292444B1 (en) | Heat sink fastener | |
US6229705B1 (en) | Clip for securing heat sink to electronic device package | |
US6108207A (en) | Clip for heat sink | |
US7167370B2 (en) | Fastener for mounting heat-radiator to electronic device | |
US7746647B2 (en) | Clip and heat dissipation assembly using the same | |
US6256846B1 (en) | Fastening device | |
US7180744B2 (en) | Heat sink mounting device | |
US6400572B1 (en) | Fastener for a heat sink | |
US6343015B1 (en) | Heat sink clip | |
US6754080B2 (en) | Clip for heat sink | |
US6621704B1 (en) | Clip for heat sink | |
US6418022B1 (en) | Heat sink clip with operating bar | |
US6396696B1 (en) | Clip for heat sink | |
US6310774B1 (en) | Heat sink clip | |
US6466445B1 (en) | Clip for heat sink |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: FOXCONN PRECISION COMPONENTS CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PENG, XIAN CAI;YANG, MING HUNG;LEE, CHENG-CHI;REEL/FRAME:012215/0864 Effective date: 20010501 |
|
REMI | Maintenance fee reminder mailed | ||
REIN | Reinstatement after maintenance fee payment confirmed | ||
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20061231 |
|
FEPP | Fee payment procedure |
Free format text: PETITION RELATED TO MAINTENANCE FEES FILED (ORIGINAL EVENT CODE: PMFP); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FEPP | Fee payment procedure |
Free format text: PETITION RELATED TO MAINTENANCE FEES GRANTED (ORIGINAL EVENT CODE: PMFG); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
SULP | Surcharge for late payment | ||
PRDP | Patent reinstated due to the acceptance of a late maintenance fee |
Effective date: 20080801 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20141231 |