AU9548498A - Resonant mode panel-loudspeakers - Google Patents
Resonant mode panel-loudspeakers Download PDFInfo
- Publication number
- AU9548498A AU9548498A AU95484/98A AU9548498A AU9548498A AU 9548498 A AU9548498 A AU 9548498A AU 95484/98 A AU95484/98 A AU 95484/98A AU 9548498 A AU9548498 A AU 9548498A AU 9548498 A AU9548498 A AU 9548498A
- Authority
- AU
- Australia
- Prior art keywords
- panel
- resonant
- suspension means
- form loudspeaker
- suspension
- 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.)
- Abandoned
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
A resonant panel-form loudspeaker characterised by suspension means located in at least one panel region of low average velocity. A method of making a resonant panel acoustic device characterised by locating at least one panel region of low average velocity and positioning suspension means within the said region(s). The method may comprise delineating an acoustically active area of a larger panel, e.g. a motor vehicle decorative trim panel, by grooving or slotting the panel in panel regions of low average velocity.
Description
WO99/21397 PCT/GB98/03131 1 5 RESONANT MODE PANEL-LOUDSPEAKERS 10 DESCRIPTION 15 TECHNICAL FIELD The invention relates to loudspeakers and more particularly to panel-form loudspeakers of the kind adapted to be excited by launching bending waves into a resonant panel to cause it to resonate to produce an acoustic 20 output. Such loudspeakers are described in our International patent application W097/09842, and are known as distributed mode loudspeakers. BACKGROUND ART In conventional pistonic loudspeakers, a moving 25 diaphragm, usually a cone, is held in position on a frame or chassis by at least one flexible member which forms a resilient suspension. This suspension performs at least the following functions, namely:- WO99/21397 PCT/GB98/03131 2 1. location in the frame of an assembly comprising the diaphragm and a vibrator usually including a moving coil motor; 2. allows motion of the diaphragm in an axial 5 direction but restrains motion in directions normal to the axis, and 3. provides a degree of damping to vibration of the diaphragm by means of its material choice and treatment. 10 These requirements are usually met by a flexible corrugated moulded member, sometimes known as a roll surround, usually made from a rubber-like material, which is connected between the outer periphery of the diaphragm and the surrounding frame and a corrugated flexible member, 15 sometimes known as a spider, which is connected between the region of the diaphragm apex and the frame. Although not always used, the common execution with two separate suspension members gives satisfactory performance in the three functions listed above. In the case of traditional 20 moving coil loudspeakers the attachment of suspensions at other positions will introduce unwanted resonances and disturb the vibrational characteristics of the diaphragm. It is among the objects of the invention to provide a suspension adapted to the needs of a resonant panel 25 loudspeaker. In the case of a resonant panel loudspeaker we have discovered that a number of regions exist within the panel which have low average velocities by reason of the inherent nature of the panels and have concluded that it WO99/21397 PCT/GB98/03131 3 might be possible to locate a suspension at or near these panel positions and that the low velocity in such regions will mean that the suspension will have little or no effect on the vibrational characteristics of the panel as a whole. 5 DISCLOSURE OF INVENTION According to one aspect of the invention there is provided a resonant panel-form loudspeaker comprising suspension means located wholly in one or more panel regions of low average velocity. Such suspension means may 10 be used to suspend the panel in a support and/or to support a vibration exciter on the panel. The support may comprise a surrounding area of the panel, which surrounding region may be acoustically inactive. The resonant panel-form loudspeaker may comprise 15 a panel having an acoustically active area and panel regions of low average velocity surrounding the acoustically active area, with slots or grooves in the panel structure defining the acoustically active area. The slots or grooves may be such that they extend only partly 20 through the panel structure. Thus the idea of using low energy regions of the panel for the mechanical support of the panel itself or of an exciter on the panel may be extended to include the use of slots or through incisions in the panel for the purpose 25 of areal definition of a desired acoustically active panel area for distributed mode operation or at least desired acoustic vibration behaviour set within, or as a part of a larger panel component. Such slotting will, for example, WO99/21397 PCT/GB98/03131 4 permit a wide range of distributed mode type vibrating panels to be produced as an integrated design with arbitrarily formed and contoured vehicle trim panels. The slots may be of any suitable form or shape consistent with 5 the desired vibration behaviour in the required frequency range. FEA (finite element analysis) techniques facilitate the rapid design and analysis of indicated slot perimeter shape and resulting geometric forms. The low vibration energy in the suspension regions 10 has the benefit of allowing the use of stronger suspension elements than would otherwise be possible, so increasing the durability of the resulting assembly. A compliant suspension may be created by incising the panel to form integral finger-like cantilever members. The 15 incisions may comprise a parallel pair of slots through the panel structure. The cantilever members may be straight or otherwise, e.g. curved. As concerns a suspension for a vibration exciter, straight cantilevers might be preferred in order better to span the distance between areas of low 20 average velocity and a region of high activity where the exciter is coupled to the panel. The suspension may consist of an array of such cantilever members. Thus the panel may be incised to form cantilever members which retain stiffness in the plane of the panel and which are 25 compliant in the plane of a frame or the like supporting the panel. Alternatively or additionally a separate compliant suspension e.g. of a rubber-like material may be fixed, e.g. by means of an adhesive, to the panel in the WO 99/21397 PCT/GB98/03131 5 said region(s) of low average velocity. Where the rubber like suspension is used in addition to the cantilevers, the rubber-like suspension may be mounted on the cantilevers. The resonant panel-form loudspeaker may comprise a 5 distributed mode acoustic radiator, e.g. of the kind defined in International patent application WO97/09842. From another the invention is a decorative trim panel, e.g. for a vehicle or the like and incorporating a loudspeaker as defined above. 10 From a further aspect, the invention is a vehicle, e.g. an automobile, comprising a loudspeaker as defined above or a decorative trim panel as defined above. From yet another aspect the invention is a method of making a resonant panel acoustic device characterised by 15 identifying the location of at least one panel region of low average velocity and positioning suspension means within the said region(s). The method may comprise defining an acoustically active area of the panel by locating panel regions of low 20 average velocity surrounding the acoustically active area and disrupting the panel structure in the said regions to form panel suspension means. The method may comprise defining the acoustically active area by slotting the panel structure. The slots may be such that they extend only 25 partly through the panel structure. Where the suspension is intended for supporting a vibration exciter, the method may further comprise identifying the desired panel location, e.g. an anti-node, WO99/21397 PCT/GB98/03131 6 for coupling the vibration exciter to drive the panel, and identifying one or more nodal regions adjacent to the drive location in which to position the exciter suspension. The method may comprise incising the panel material to 5 define cantilevers forming the suspension means. The suspension means may be such as to have at least three cantilevers. BRIEF DESCRIPTION OF DRAWINGS The invention is diagrammatically illustrated, by way 10 of example, in the accompanying drawings, in which: Figure 1 is a cross-sectional side view through part of a resonant panel-form loudspeaker and showing a suspension for a vibration exciter; Figure 2 is an underneath plan view to smaller scale 15 of the resonant loudspeaker panel of Figure 1; Figure 3 is an underneath plan view of a resonant loudspeaker panel showing three embodiments of vibration exciter suspension; Figure 4 is a plan view of a panel incorporating a 20 resonant panel-form loudspeaker; Figure 5 is a scrap plan view, to an enlarged scale, of detail 'A' of Figure 4, and Figures 6 and 7 are alternative scrap cross-sectional views on the line A-A of Figure 5. 25 BEST MODES FOR CARRYING OUT THE INVENTION In the drawings, and referring more particularly to Figures 1 and 2, there is shown a resonant panel-form loudspeaker 14 e.g. of the general kind described in WO99/21397 PCT/GB98/03131 7 International patent application WO97/09842 and comprising a resonant generally rectangular flat panel 1 usually of a stiff lightweight material forming an acoustic radiator and an inertial vibration exciter 4 mounted on the panel 1 to 5 induce bending wave vibration in the panel to cause it to resonate to produce an acoustic output. The panel may be of monolithic construction, but as shown comprises a cellular core 2 sandwiched between opposed face skins 3. The inertial vibration exciter 4 comprises a voice 10 coil/tubular coil former assembly 13 mounted, e.g. by bonding in a circular aperture 12 in the panel 1 whereby the assembly 13 extends from one face of the panel (the upper face as shown in Figure 1) and projects into an annular gap 15 in a magnet assembly 5,6,7 and defined 15 between a disc-like pole piece 7 and a pole cap 6 which together sandwich a disc-like magnet 5. The assembly comprising the magnet 5 and poles 6 and 7 is mounted on the panel 1 for axial movement relative to the coil/former assembly 13, when the coil is energised 20 with a signal, on a compliant suspension attached to an annular flange 8 projecting from the cup 6 and comprising three equi-spaced rubber-like pads 9, only one of which is visible in Figure 1. In turn the pads 9 are mounted on finger-like cantilevers 10 formed by incising U-shaped 25 slots 11 through the panel and equi-spaced round and concentric with the aperture 12 as best can be seen in Figure 2 in panel regions of low average velocity, such that the inner ends 16 of the cantilevers are free for WO99/21397 PCT/GB98/03131 8 movement normal to the plane of the panel 1. The pads 9 are attached near to the free ends 16 of the cantilevers 10. It will be understood that, if desired, the pads 9 might be omitted and the magnet 5 assembly 5,6,7 might instead be mounted directly on the cantilevers 10. Figure 3 of the drawings show various alternative embodiments of cantilever for suspending a vibration exciter on the panel 1. These include a single straight 10 finger-like cantilever 10 defined by a U-shaped slot or incision 11 of the kind shown in Figures 1 and 2, a curved cantilever 17 defined by a spiral slot 18, and a resilient suspension comprising a cantilever member 19 defined between an opposed pair of arcuate slots 20 and having a 15 central part circular portion 21 and an opposed pair of projections 22 attached at their distal ends to the panel, with the magnet system connected at a central position 23 of the portion 21. Figures 4 to 7 disclose an embodiment of resonant 20 panel-form loudspeaker 14 of the general kind described above and having a resonant panel 1 forming part of a larger panel 24, which may, for example, be a decorative trim panel in an automobile or the like vehicle. In this embodiment the loudspeaker 14 has a rectangular resonant 25 panel 1 defined within the larger panel 24 by grooves or slots 25, the panel 1 being suspended in the panel 24 by suspension cantilevers 27 defined by opposed parallel slots 26 arranged to bridge the slot 25 in regions round the WO 99/21397 PCT/GB98/03131 9 panel 1 of low average velocity. One cantilever is disposed on each side of the panel 1. The vibration exciter 4 may be suspended as described above or conveniently as desired. As shown in Figure 6, the slot 25 5 may extend only partly through the panel 1. As shown, the slot 25 extends through the upper skin 3 and through the core 2 of the panel 1 to leave the lower skin intact and covering the slot. Alternatively as shown in Figure 7, the slot 25 may extend completely through the panel 1. 10 In regard to the application of the present invention to automobile trim panels and the like decorative structures, the slotting may be made at an early stage of manufacture, e.g. with laser or water jet cutting and the slots need only be wide enough to achieve a stable 15 clearance for the vibrating component. In practice a width of 1mm or 2mm may generally be sufficient. The width of the suspension component depends upon the effective cantilever length, the toughness and linear stiffness of the panel in that region and the acceleration forces which 20 the whole assembly might be reasonably required to sustain. Values of about 4 to about 25mm have proved effective for cantilever width. Another benefit concerns durability in respect of lateral acceleration forces. A relatively narrow slot 25 width allow for a safe grounding of the panel in contrast to surface configurations using adhesive bonding to compliant suspension components. In this later case the suspension may suffer damage due to de-bonding.
WO99/21397 PCT/GB98/03131 10 Where the acoustic arrangement suggests that separation of the radiation is required between front and rear panel faces, the larger general panel may act as a baffle, generally augmented by local structures such as 5 vehicle door frame or some overall framing and support. In an architectural application the structural panel will be augmented by the design of the room or building. Acoustic leakage via the narrow slots is likely to be negligible between front and back. Such low leakage is also 10 beneficial in respect of stray noise isolation from the back to the front of the panel which may be important in some applications. In connection with vehicle trim panels a later stage of manufacture concerns the lamination of a lightweight 15 relatively flexible decorative film of cloth on a thin layer of soft open cell polyurethane foam. This structure may be applied over the slots without significant impairment of the operating principle. As regards the user, no witness of the slots is then apparent. Some 20 small further improvement in acoustic isolation may result from the finite acoustic resistance of the foam and cloth covered slots. INDUSTRIAL APPLICABILITY The advantages of arrangements as shown in the 25 drawings are as follows, namely: 1. suspension can use same material as panel, so cost is low; 2. suspension may be located within the panel WO99/21397 PCT/GB98/03131 11 thickness, or with only a small increase of thickness; 3. a number of such suspension positions can be found either to suspend the panel to the 5 relatively stationary part of a vibration exciter, e.g. a magnet assembly, and/or to suspend the panel to a frame or other support, and, 4. simple cantilever/beam calculations readily 10 provide the desired value of the compliance.
Claims (19)
1. A resonant panel-form loudspeaker characterised by suspension means located in at least one panel region of low average velocity. 5
2. A resonant panel-form loudspeaker according to claim 1, characterised by a suspension means created by incising the panel structure to form at least one cantilever member integral with the panel structure.
3. A resonant panel-form loudspeaker according to claim 10 2, characterised in that the incisions comprise a parallel pair of slots through the panel structure.
4. A resonant panel-form loudspeaker according to claim 2 or claim 3, characterised in that the suspension means comprises an array of the cantilever members. 15
5. A resonant panel-form loudspeaker according to any one of claims 2 to 4, characterised in that the cantilever members are such as to retain stiffness in the plane of the panel and to create compliance in a plane normal to the plane of the panel. 20
6. A resonant panel-form loudspeaker according to any preceding claim, characterised by a compliant suspension fixed to the panel.
7. A resonant panel-form loudspeaker according to claim 6 when dependent on any one of claims 2 to 5, characterised 25 in that the compliant suspension is fixed to the cantilever member.
8. A resonant panel-form loudspeaker according to any preceding claim, characterised by a distributed mode WO99/21397 PCT/GB98/03131 13 acoustic radiator.
9. A resonant panel-form loudspeaker according to any preceding claim, characterised in that the panel comprises an acoustically active area and regions of low average 5 velocity surrounding the acoustically active area, and characterised by slots or grooves in the panel structure and defining the acoustically active area.
10. A resonant panel-form loudspeaker according to claim 9, characterised in that the slots or grooves are such 10 that they extend only partly through the panel structure.
11. A decorative trim panel characterised by a resonant panel-form loudspeaker according to claim 9 or claim 10.
12. A vehicle characterised by a decorative trim panel as claimed in claim 11. 15
13. A method of making a resonant panel acoustic device characterised by locating at least one panel region of low average velocity and positioning suspension means within the said region(s).
14. A method according to claim 13, characterised by 20 defining an acoustically active area of the panel by locating panel regions of low average velocity surrounding the acoustically active area and disrupting the panel structure in the said regions to form the suspension means. 25
15. A method according to claim 13 or claim 14 when dependent on claim 11, characterised by defining the acoustically active area by slotting the panel structure.
16. A method according to claim 15, characterised by WO99/21397 PCT/GB98/03131 14 forming the slots such that they extend only partly through the panel structure.
17. A method according to any one of claims 13 to 16, characterised by incising the panel material to define 5 cantilever members forming the suspension means.
18. A method according to any one of claims 13 to 17, characterised by forming a vibration exciter suspension means comprising identifying a desired panel drive location for coupling the vibration exciter to the panel 10 to drive the panel, and identifying one or more regions of low average velocity adjacent to the drive location in which to position the exciter suspension means.
19. A method according to any one of claims 11 to 16, characterised by forming a suspension means having at 15 least three cantilever members.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9722079.2A GB9722079D0 (en) | 1997-10-21 | 1997-10-21 | Loudspeaker suspension |
GB9722079 | 1997-10-21 | ||
PCT/GB1998/003131 WO1999021397A1 (en) | 1997-10-21 | 1998-10-16 | Resonant mode panel-loudspeakers |
Publications (1)
Publication Number | Publication Date |
---|---|
AU9548498A true AU9548498A (en) | 1999-05-10 |
Family
ID=10820766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU95484/98A Abandoned AU9548498A (en) | 1997-10-21 | 1998-10-16 | Resonant mode panel-loudspeakers |
Country Status (14)
Country | Link |
---|---|
EP (1) | EP1036484B1 (en) |
JP (1) | JP2001521353A (en) |
KR (1) | KR20010031264A (en) |
CN (1) | CN1271508A (en) |
AT (1) | ATE266301T1 (en) |
AU (1) | AU9548498A (en) |
BR (1) | BR9812949A (en) |
CA (1) | CA2303789A1 (en) |
DE (1) | DE69823695D1 (en) |
GB (1) | GB9722079D0 (en) |
HK (1) | HK1027251A1 (en) |
IL (1) | IL135677A0 (en) |
TW (1) | TW410526B (en) |
WO (1) | WO1999021397A1 (en) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0025125D0 (en) * | 2000-10-13 | 2000-11-29 | New Transducers Ltd | Loudspeaker driver |
US7548854B2 (en) | 2002-01-31 | 2009-06-16 | Awi Licensing Company | Architectural sound enhancement with pre-filtered masking sound |
US6983819B2 (en) | 2002-04-02 | 2006-01-10 | Awi Licensing Company | Entertainment sound panels |
US10158337B2 (en) | 2004-08-10 | 2018-12-18 | Bongiovi Acoustics Llc | System and method for digital signal processing |
US11431312B2 (en) | 2004-08-10 | 2022-08-30 | Bongiovi Acoustics Llc | System and method for digital signal processing |
US8284955B2 (en) | 2006-02-07 | 2012-10-09 | Bongiovi Acoustics Llc | System and method for digital signal processing |
US10848118B2 (en) | 2004-08-10 | 2020-11-24 | Bongiovi Acoustics Llc | System and method for digital signal processing |
JP4565991B2 (en) * | 2004-12-24 | 2010-10-20 | 富士通テン株式会社 | Speaker device using vehicle interior plate as diaphragm and interior plate |
US10069471B2 (en) | 2006-02-07 | 2018-09-04 | Bongiovi Acoustics Llc | System and method for digital signal processing |
US11202161B2 (en) | 2006-02-07 | 2021-12-14 | Bongiovi Acoustics Llc | System, method, and apparatus for generating and digitally processing a head related audio transfer function |
US10848867B2 (en) | 2006-02-07 | 2020-11-24 | Bongiovi Acoustics Llc | System and method for digital signal processing |
US10701505B2 (en) | 2006-02-07 | 2020-06-30 | Bongiovi Acoustics Llc. | System, method, and apparatus for generating and digitally processing a head related audio transfer function |
US9615189B2 (en) | 2014-08-08 | 2017-04-04 | Bongiovi Acoustics Llc | Artificial ear apparatus and associated methods for generating a head related audio transfer function |
JP4946272B2 (en) * | 2006-08-30 | 2012-06-06 | 日本電気株式会社 | Electroacoustic transducer and transmitter for sonar equipped with the electroacoustic transducer |
JP4967725B2 (en) * | 2007-03-12 | 2012-07-04 | ヤマハ株式会社 | Array speaker and speaker device |
WO2010137988A1 (en) * | 2009-05-29 | 2010-12-02 | Leiv Eiriksson Nyskapning As | Loudspeaker arrangement |
US9883318B2 (en) | 2013-06-12 | 2018-01-30 | Bongiovi Acoustics Llc | System and method for stereo field enhancement in two-channel audio systems |
US9264004B2 (en) | 2013-06-12 | 2016-02-16 | Bongiovi Acoustics Llc | System and method for narrow bandwidth digital signal processing |
US9906858B2 (en) | 2013-10-22 | 2018-02-27 | Bongiovi Acoustics Llc | System and method for digital signal processing |
US10639000B2 (en) | 2014-04-16 | 2020-05-05 | Bongiovi Acoustics Llc | Device for wide-band auscultation |
US10820883B2 (en) | 2014-04-16 | 2020-11-03 | Bongiovi Acoustics Llc | Noise reduction assembly for auscultation of a body |
US9615813B2 (en) | 2014-04-16 | 2017-04-11 | Bongiovi Acoustics Llc. | Device for wide-band auscultation |
US9564146B2 (en) | 2014-08-01 | 2017-02-07 | Bongiovi Acoustics Llc | System and method for digital signal processing in deep diving environment |
US9638672B2 (en) | 2015-03-06 | 2017-05-02 | Bongiovi Acoustics Llc | System and method for acquiring acoustic information from a resonating body |
DE102015105330A1 (en) * | 2015-04-08 | 2016-10-13 | Ujet Vehicles S.À.R.L. | Battery assembly and scooter with a battery assembly |
JP2018537910A (en) | 2015-11-16 | 2018-12-20 | ボンジョビ アコースティックス リミテッド ライアビリティー カンパニー | Surface acoustic transducer |
US9621994B1 (en) | 2015-11-16 | 2017-04-11 | Bongiovi Acoustics Llc | Surface acoustic transducer |
CN112236812A (en) | 2018-04-11 | 2021-01-15 | 邦吉欧维声学有限公司 | Audio-enhanced hearing protection system |
US10959035B2 (en) | 2018-08-02 | 2021-03-23 | Bongiovi Acoustics Llc | System, method, and apparatus for generating and digitally processing a head related audio transfer function |
KR102215716B1 (en) * | 2019-10-21 | 2021-02-18 | 삼원액트 주식회사 | Panel with sound reproduction |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2131953T3 (en) * | 1995-09-02 | 1999-08-01 | New Transducers Ltd | SPEAKERS WHICH ARE COMPOSED OF PANEL SHAPED ACOUSTIC RADIATION ELEMENTS. |
UA51671C2 (en) * | 1995-09-02 | 2002-12-16 | Нью Транзд'Юсез Лімітед | Acoustic device |
-
1997
- 1997-10-21 GB GBGB9722079.2A patent/GB9722079D0/en not_active Ceased
-
1998
- 1998-10-16 KR KR1020007004251A patent/KR20010031264A/en not_active Application Discontinuation
- 1998-10-16 AU AU95484/98A patent/AU9548498A/en not_active Abandoned
- 1998-10-16 EP EP98949102A patent/EP1036484B1/en not_active Expired - Lifetime
- 1998-10-16 WO PCT/GB1998/003131 patent/WO1999021397A1/en active IP Right Grant
- 1998-10-16 CN CN98809523A patent/CN1271508A/en active Pending
- 1998-10-16 JP JP2000517579A patent/JP2001521353A/en active Pending
- 1998-10-16 DE DE69823695T patent/DE69823695D1/en not_active Expired - Lifetime
- 1998-10-16 AT AT98949102T patent/ATE266301T1/en not_active IP Right Cessation
- 1998-10-16 IL IL13567798A patent/IL135677A0/en unknown
- 1998-10-16 BR BR9812949-0A patent/BR9812949A/en not_active IP Right Cessation
- 1998-10-16 CA CA002303789A patent/CA2303789A1/en not_active Abandoned
- 1998-10-28 TW TW087117887A patent/TW410526B/en not_active IP Right Cessation
-
2000
- 2000-09-28 HK HK00106173A patent/HK1027251A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR20010031264A (en) | 2001-04-16 |
WO1999021397A1 (en) | 1999-04-29 |
IL135677A0 (en) | 2001-05-20 |
CA2303789A1 (en) | 1999-04-29 |
CN1271508A (en) | 2000-10-25 |
HK1027251A1 (en) | 2001-01-05 |
BR9812949A (en) | 2000-08-08 |
DE69823695D1 (en) | 2004-06-09 |
ATE266301T1 (en) | 2004-05-15 |
GB9722079D0 (en) | 1997-12-17 |
JP2001521353A (en) | 2001-11-06 |
EP1036484A1 (en) | 2000-09-20 |
EP1036484B1 (en) | 2004-05-06 |
TW410526B (en) | 2000-11-01 |
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Legal Events
Date | Code | Title | Description |
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MK5 | Application lapsed section 142(2)(e) - patent request and compl. specification not accepted |