US20070175177A1 - Multiple glazing with thermal and acoustic insulation - Google Patents

Multiple glazing with thermal and acoustic insulation Download PDF

Info

Publication number
US20070175177A1
US20070175177A1 US10/585,249 US58524904A US2007175177A1 US 20070175177 A1 US20070175177 A1 US 20070175177A1 US 58524904 A US58524904 A US 58524904A US 2007175177 A1 US2007175177 A1 US 2007175177A1
Authority
US
United States
Prior art keywords
glazing element
multiple glazing
glass pane
sheets
glass
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
Application number
US10/585,249
Other languages
English (en)
Inventor
Marc Rehfeld
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Glass France SAS
Original Assignee
Saint Gobain Glass France SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Saint Gobain Glass France SAS filed Critical Saint Gobain Glass France SAS
Publication of US20070175177A1 publication Critical patent/US20070175177A1/en
Assigned to SAINT-GOBAIN GLASS FRANCE reassignment SAINT-GOBAIN GLASS FRANCE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: REHFELD, MARC
Abandoned legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light
    • E06B3/6707—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light specially adapted for increased acoustical insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B32B17/10045—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets with at least one intermediate layer consisting of a glass sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B32B17/10045—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets with at least one intermediate layer consisting of a glass sheet
    • B32B17/10055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets with at least one intermediate layer consisting of a glass sheet with at least one intermediate air space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/263—Frames with special provision for insulation
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds

Definitions

  • the present invention concerns a multiple glazing element for sound protection mounted in a window comprising a first laminated glass pane and at least one second single thickness glass pane, parallel to the first pane and separated from the latter by a layer of gas, the glass sheets of the laminated pane being joined together by at least one plastic film.
  • Such glazing elements are usually intended to be installed in buildings in order to reduce on the inside the perception of outside noises and to provide heat protection.
  • glazing elements For several years, in many countries, the use of heat insulating glazing elements has become widespread. Most frequently, they consist of two panes of the same thickness, usually lying between 2.5 and 4 mm, separated by a 6 to 16 mm layer of gas and bonded on their periphery with the aid of varied mastics and where appropriate metal sections. During the heating period, such glazing elements improve the comfort of premises used for habitation, work and leisure and significantly reduce the heat losses. With respect to the sound insulation, a glazing element comprising a 4 mm pane, a 12 mm gas layer and a 10 mm pane constitutes an appropriate benchmark.
  • glazing elements In order to satisfy certain heat or sound insulation requirements, other types of glazing elements have already been proposed that are multiple and laminated glazing elements.
  • the latter pose problems of weight and volume in relation to the windows into which they are built.
  • such glazing elements are produced with single thickness glass panes that are usually thicker than 8 mm and usually used laminated glass panes that generally consist of glass sheets at least 4 mm thick.
  • This also produces multiple glazing elements that are extremely bulky and heavier than average and in particular heavier than a benchmark insulating glazing element such as is cited hereinabove.
  • the invention therefore aims to supply a glazing element to provide heat and sound protection as effective as a benchmark insulating glazing element or as a multiple and laminated glazing element, without being so heavy.
  • the multiple glazing element according to the invention is characterized in that the two glass sheets of the laminated glass pane each have a thickness lying between 1.5 and 2.5 mm and the single thickness glass pane has a thickness lying between 3 and 5 mm, and that the weight of the glazing element is at least 30% less than the weight of an insulating glazing element which comprises at least two sheets of single thickness glass separated by a layer of gas having the same thickness as that of the multiple glazing element, the difference between the weighted sound reduction index R w of the multiple glazing element and the weighted sound reduction index R w of said insulating glazing element with two sheets of single thickness glass not exceeding 3 dB.
  • the weight of the multiple glazing element is at least 40% less than the weight of the insulating glazing element with two sheets of single thickness glass.
  • the difference between the weighted sound reduction index R w of the multiple glazing element and the weighted sound reduction index R w of said insulating glazing element with two sheets of single thickness glass does not exceed 2 dB, the indices possibly even being equivalent.
  • the layers of gas have a thickness lying between 6 and 20 mm and preferably of 12 mm.
  • the plastic film of the laminated glass pane has a thickness equal to or greater than 0.38 mm.
  • this plastic film is a film giving improved sound insulation properties.
  • a film with improved sound insulation properties is called a film fulfilling the criteria as defined in patents EP-B1-0 100 701 or EP-B1-0 844 075, in particular to provide good sound protection against road or solid-borne noises.
  • the film is selected such that a strip 9 cm long and 3 cm wide, consisting of a laminated glass pane comprising two glass sheets 4 mm thick joined together by a 2 mm layer of this film, has a critical frequency that differs not more than 35% from that of a strip of glass having the same length, the same width and being 4 mm thick.
  • the film insert is adopted when it has a tan ⁇ loss factor greater than 0.6 and a G′ shear modulus less than 2.10 7 N/cm 2 , in a temperature range of between 10 and 60° C., in a frequency range between 50 and 10 000 Hz.
  • the plastic film is associated with at least one other film providing in particular properties additional to those providing the laminating.
  • At least one of the glass sheets of the glazing element comprises at least one functional coating.
  • the glazing element comprises a single thickness glass pane 3 mm thick, and a laminated glass pane with two glass sheets each 2.1 mm thick.
  • the glazing element comprises a single thickness glass pane 4 mm thick, and a laminated glass pane with two glass sheets each 1.6 mm thick.
  • the glazing element comprises a single thickness glass pane 4 mm thick, and a laminated glass pane with two glass sheets each 2.1 mm thick.
  • the glazing elements according to the invention have dimensions of less than 2 m 2 and are intended to be installed in buildings or vehicles, such as motor vehicle glazing elements.
  • FIG. 1 represents a multiple glazing element according to the invention
  • FIG. 2 illustrates the sound reduction index of different glazing elements of the invention and of a benchmark insulating glazing element.
  • the multiple glazing element 1 illustrated in FIG. 1 comprises a laminated glass pane 10 and a single thickness glass pane 20 , these panes being separated by a layer of gas 30 such as a layer of air, and assembled in a sealed manner by means known to those skilled in the art.
  • a layer of gas 30 such as a layer of air
  • the single thickness glass pane 20 has a thickness lying between 3 and 5 mm.
  • the laminated glass pane consists of at least two glass sheets 11 and 12 separated and secured to one another by a sheet of plastic material 13 .
  • Each glass sheet has a thickness lying between 1.5 and 2.5 mm.
  • the sheet 13 is at least 0.38 mm thick.
  • This sheet is for example made of polyvinylbutyral (PVB) with improved sound insulation properties, or of normal PVB which does not have such sound insulation properties.
  • PVB polyvinylbutyral
  • the glazing element may comprise, on one or more of its constituent glass sheets, functional coatings of the thin layer type, for example, for anti-scratch protection, protection against UV rays, glazing element coloration.
  • the plastic film 13 may be associated with at least one other film providing in particular additional properties (colors, anti-UV, light diffusion, etc.).
  • the glazing element of the invention has sound insulation properties equivalent or substantially equivalent, that is to say not exceeding a difference of 1 dB in sound reduction index, to a usual benchmark insulating glazing element which comprises at least two glass sheets separated by a layer of gas identical to the layer of gas 30 , the weight of the glazing element of the invention being at least 30% less than the weight of the benchmark insulating glazing element, preferably at least 40% less. It will be noted that the weight of the insert is considered negligible.
  • Benchmark insulating glazing element No. 0 is a type 4 (12) 10 glazing element, that is to say comprising a 4 mm glass sheet, a 12 mm gas layer and a 10 mm glass sheet.
  • This benchmark glazing element is particularly effective because it has a weighted sound reduction index R w of 38 dB, compared with an insulating glazing element of the same constitution but with 3 mm glass sheets and a gas layer of identical thickness, for which the reduction index R w is only 32 dB.
  • the sound reduction index is measured according to the ISO 140 standard in an installation complying with said standard on glazing element samples with dimensions of 800 mm ⁇ 500 mm, and the weighted index R w subsequently calculated according to the ISO 717 standard.
  • glazing elements of the invention are as follows:
  • the glazing elements of the invention are numbered in this manner, the PVB sheet separating the laminate being 0.38 mm thick.
  • the curves in FIG. 2 reproduce the sound reduction index measurement points from 100 to 5000 Hz in the table above. It will be noted that the glazing elements of the invention have an sound insulation behavior every bit as effective as the benchmark insulating glazing element.
  • Glazing elements of the No. 2 or No. 3 type comprising the single thickness 4 mm glass pane and including the PVB with improved sound insulation properties may be preferred.
  • the thicknesses of the glass of the single thickness glass pane (from 3 to 5 mm) and of the laminated glass pane (from twice 1.5 mm to twice 2.5 mm) are such that the greatest ratio of the extremes equals 1.7 (that is 5/(2 ⁇ 1.5) or (2 ⁇ 2.5)/3). Consequently, the imbalance in weight on one side of the glazing element relative to the other side does not exceed a factor of 2, whereas for example the benchmark glazing element has an imbalance ratio of 2.5 (10/4).
  • assembly of the single thickness glass pane to the laminated glass pane is more convenient; there is no need to position the heavier pane underneath and wait until all the seals providing leaktightness and the mechanical rigidity is finished before carrying out installation.
  • the glazing element is easier to handle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Architecture (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Laminated Bodies (AREA)
US10/585,249 2004-01-09 2004-12-15 Multiple glazing with thermal and acoustic insulation Abandoned US20070175177A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0400154A FR2864988B1 (fr) 2004-01-09 2004-01-09 Vitrage multiple a proprietes d'isolation acoustique et thermique
FR0400154 2004-01-09
PCT/FR2004/003229 WO2005075784A1 (fr) 2004-01-09 2004-12-15 Vitrage multiple a proprietes d'isolation acoustique et thermique

Publications (1)

Publication Number Publication Date
US20070175177A1 true US20070175177A1 (en) 2007-08-02

Family

ID=34684890

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/585,249 Abandoned US20070175177A1 (en) 2004-01-09 2004-12-15 Multiple glazing with thermal and acoustic insulation

Country Status (7)

Country Link
US (1) US20070175177A1 (ko)
EP (1) EP1702130A1 (ko)
KR (1) KR20070001092A (ko)
CN (1) CN1902372A (ko)
CA (1) CA2552813A1 (ko)
FR (1) FR2864988B1 (ko)
WO (1) WO2005075784A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220412153A1 (en) * 2019-11-26 2022-12-29 Vkr Holding A/S A roof window with an acoustic laminated vacuum insulated glass unit

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0600022D0 (en) * 2006-01-03 2006-02-08 Pilkington Plc Glazings
EP2318206B1 (fr) 2008-07-24 2017-01-04 AGC Glass Europe Vitrage isolant multiple
CN102031919A (zh) * 2010-11-11 2011-04-27 贵州大行节能咨询服务有限公司 三或四毫米薄玻贴膜中空安全玻璃
FR3057900A1 (fr) * 2016-10-26 2018-04-27 Saint-Gobain Glass France Vitrage multiple comprenant au moins une feuille de verre mince revetue d'un empilement a faible emissivite

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4011356A (en) * 1974-01-29 1977-03-08 Glaverbel-Mecaniver S.A. Laminated glazing pane
US4614676A (en) * 1982-07-05 1986-09-30 Saint-Gobain Vitrage Multiple window glass having thermal and acoustical insulating properties
US5368917A (en) * 1989-03-10 1994-11-29 Saint Gobain Vitrage International Acoustic protective glazing for a vehicle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144792B (en) * 1983-08-10 1986-09-17 Pilkington Brothers Plc Sound insulating double glazing
FR2755685B1 (fr) * 1996-11-14 1999-01-08 Saint Gobain Vitrage Vitrage multiple a proprietes d'isolation acoustique et thermique
ES2183106T5 (es) 1996-11-26 2016-09-29 Saint-Gobain Glass France Utilización de un acristalamiento laminado para la amortiguación de vibraciones de origen sólido en un vehículo

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4011356A (en) * 1974-01-29 1977-03-08 Glaverbel-Mecaniver S.A. Laminated glazing pane
US4614676A (en) * 1982-07-05 1986-09-30 Saint-Gobain Vitrage Multiple window glass having thermal and acoustical insulating properties
US5368917A (en) * 1989-03-10 1994-11-29 Saint Gobain Vitrage International Acoustic protective glazing for a vehicle
US5478615A (en) * 1989-03-10 1995-12-26 Saint Gobain Vitrage International Acoustic protective glazing for a vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220412153A1 (en) * 2019-11-26 2022-12-29 Vkr Holding A/S A roof window with an acoustic laminated vacuum insulated glass unit

Also Published As

Publication number Publication date
CA2552813A1 (fr) 2005-08-18
WO2005075784A1 (fr) 2005-08-18
EP1702130A1 (fr) 2006-09-20
KR20070001092A (ko) 2007-01-03
CN1902372A (zh) 2007-01-24
FR2864988B1 (fr) 2006-04-28
FR2864988A1 (fr) 2005-07-15

Similar Documents

Publication Publication Date Title
US7121380B2 (en) Soundproofing laminated window for vehicles
US5773102A (en) Soundproofing laminated glass pane
US6119807A (en) Sound absorbing article and method of making same
US7829192B2 (en) Acoustic laminated glazing, acoustic interlayer and method for selecting the interlayer for optimal acoustic damping
US9102122B2 (en) Method for selecting an interlayer for vibroacoustic damping, interlayer and glazing unit comprising such an interlayer
US20190210328A1 (en) Visco-elastic plastic spacer for vibro-acoustic damping and glazing comprising such a spacer
JPH02188454A (ja) 複合ガラスパネル
US20100300800A1 (en) Acoustic glazing element
JP5310019B2 (ja) 複層ガラス
US10801255B2 (en) Insulating glazing with increased breakthrough-resistance and an adapter element
KR20100015386A (ko) 개선된 진동 음향 댐핑 특성을 갖는 글레이징, 이러한 글레이징의 제조 방법, 및 차량 객실 내의 방음 방법
JP2011032851A (ja) 合わせ複層ガラスのサッシ枠への取り付け構造
US20070175177A1 (en) Multiple glazing with thermal and acoustic insulation
JP4226673B2 (ja) 防音性及び熱絶縁性を持つ多重ガラス集成体
JP2010138026A (ja) 複層ガラス
JP2010006683A (ja) 遮音性複層ガラス
WO2001055045A1 (fr) Vitrage double pour fenêtre
GB2159201A (en) Hollow glazing units
JP5223587B2 (ja) 遮音性複層ガラス
JP2020001648A (ja) 自動車用複層ガラス
CN217925543U (zh) 一种复合隔声玻璃
JPH0797241A (ja) 遮音性合わせガラス
JP2010265129A (ja) 遮音性複層ガラス
JPH05310450A (ja) 自動車用窓ガラス
JP2010265128A (ja) 遮音性複層ガラス

Legal Events

Date Code Title Description
AS Assignment

Owner name: SAINT-GOBAIN GLASS FRANCE, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:REHFELD, MARC;REEL/FRAME:020481/0396

Effective date: 20060511

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION