EP0344164B1 - Improvements relating to ceiling tiles and exposed grid suspension systems - Google Patents

Improvements relating to ceiling tiles and exposed grid suspension systems Download PDF

Info

Publication number
EP0344164B1
EP0344164B1 EP88900467A EP88900467A EP0344164B1 EP 0344164 B1 EP0344164 B1 EP 0344164B1 EP 88900467 A EP88900467 A EP 88900467A EP 88900467 A EP88900467 A EP 88900467A EP 0344164 B1 EP0344164 B1 EP 0344164B1
Authority
EP
European Patent Office
Prior art keywords
tile
inverted
ceiling
tiles
slot
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.)
Revoked
Application number
EP88900467A
Other languages
German (de)
French (fr)
Other versions
EP0344164A1 (en
Inventor
Donald George Gordon
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 Ecophon AB
Original Assignee
Ecophon AB
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10610823&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0344164(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ecophon AB filed Critical Ecophon AB
Publication of EP0344164A1 publication Critical patent/EP0344164A1/en
Application granted granted Critical
Publication of EP0344164B1 publication Critical patent/EP0344164B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/06—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/22—Connection of slabs, panels, sheets or the like to the supporting construction
    • E04B9/28—Connection of slabs, panels, sheets or the like to the supporting construction with the slabs, panels, sheets or the like having grooves engaging with horizontal flanges of the supporting construction or accessory means connected thereto

Definitions

  • the invention relates to the edge detail of ceiling tiles designed to fit into standard exposed grid suspension systems such as is known from GB-A-2 163 787. More particularly, the invention relates to a ceiling system comprising a suspended lattice grid including inverted tee main runners and inverted cross tees, and ceiling tiles carried by the suspended lattice grid, the tiles having a width corresponding to the centre distance of the inverted tee main runners and a length corresponding to the centre distance of the inverted cross tees, each tile on two opposite sides having slots for receiving the flanges of opposite inverted tee main runners such that the downwardly facing slot surfaces of the tile rest on the upper flange surfaces such that the lower side portions of the tile below the downwardly facing slot surfaces form first tongues concealing the inverted tee main runners, the upper portions of said two opposite sides adjacent the slots being cut back enabling, together with said slots, the tile to be positioned on the inverted tee main runners, the upper portions of the remaining two
  • the object of the invention is to improve a ceiling system of this kind such that when the ceiling tiles are fitted they conceal the grid and are fully demountable.
  • the ceiling system being that characterized in that the upper portion adjacent each slot has a single step, the thickness of the portion being reduced by the step at the end closer to the cut-back, the upper step surface, in the plane of the tile, being flat over its width for resting on the upper flat flange surfaces of the associated inverted tee main runner and having a depth ensuring that the tile is equally supported on the two associated upper flange surfaces by engagement between the edges of the flanges, and the bottoms of the steps, and the dimensions of each slot are such that a first tongue of a tile can pass into the slot of an adjacent tile, thereby enabling a tile to be fully independently demountable without disturbing adjacent tiles.
  • FR-A-1 152 496 discloses a ceiling system comprising concealed inverted tee runners and ceiling boxes suspended on the runners. No cross tees are provided. Instead on the two corresponding sides, each celing box has vertical walls which are to be in direct stabilizing contact with the walls of the adjacent boxes. The remaining two sides of the box also have vertical walls which are to be in direct stabilizing contact with the walls of the adjacent boxes. In addition thereto, the first mentioned walls have thin supporting end hooks for cooperation with ribs at the edges of the flanges of the inverted tee runners.
  • Suspended ceiling tiles currently produced for either concealed or exposed grid systems cannot be fixed to standard exposed grid systems such as to conceal the grid and be fully demountable.
  • a ceiling tile manufactured in accordance with the invention incorporating edges as shown in figure 5 can be fixed to a standard exposed grid system and will conceal the grid from view and each tile will be independently demountable.
  • Figure 5 shows a ceiling tile 1 where the dimension 'X' equals the width of the upper part of flange 2 of the inverted tee grid 3.
  • the detail of the ceiling tile 1 below the the flange 2 shows a bevelled edge 4. (This detail can vary to correspond with current concealed type ceiling tiles and could be square, channeled or any desired shape).
  • the depth of the slots 5 & 6 related to the ceiling tile edges 7 & 8 is critical and must also correspond to the dimension of the flange 2 of the inverted tee 3 (small tolerances will have to be allowed for practical purposes).
  • the overall dimension of the ceiling tile 1 below the flange 2 of the inverted tee 3 will be the same as the centres of the tee 3 whereas the overall dimension of the back of the ceiling tile 1 will be reduced by 'X' (2 x 0.5 'X' at either edge).
  • the depth of slot 5 will be 'X' to allow the tile to be slid fully onto the R.H. flange 2 of the inverted tee 3 (cf. also figs. 7 & 8).
  • the ceiling tile 1 is pushed upwards until the slot 6 is level with the L.H. flange 2 of the inverted tee 3.
  • the ceiling tile 1 is then slid onto the left hand flange 2 of the inverted tee (3) (cf. also figs. 8 & 9).
  • the depth of the top section of slot 6 0.5 'X' will ensure the ceiling tile 1 is equally supported on half of the available flange 2 i.e. half the possible bearing available.
  • Figure 6 shows the ceiling tile 1 with a cut-out section 9 on the back right and left hand sides and an overall rear dimension which is -2 'X' (2 x 1 'X') less than the inside stalk of the inverted tee 3. This allows the back portion of the tile 1 to fit between the flanges of the inverted tee grid 3.
  • Ceiling tiles manufactured in accordance with the invention incorporating edges shown in figure 5 have the following advantages:-

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Finishing Walls (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Residential Or Office Buildings (AREA)
  • Escalators And Moving Walkways (AREA)
  • Building Environments (AREA)
  • Dowels (AREA)
  • Body Structure For Vehicles (AREA)
  • Glass Compositions (AREA)
  • Lasers (AREA)

Abstract

A ceiling tile (1) with specially designed side edge details of cut out sections (9) on two opposite edges of the tile and slots (5 and 6) and edges (7 and 8) on the other two sides to enable the tile to be positioned in a standard ''exposed grid system'' such that when the tile is fixed in position it conceals the gridwork and is fully demountable.

Description

  • The invention relates to the edge detail of ceiling tiles designed to fit into standard exposed grid suspension systems such as is known from GB-A-2 163 787. More particularly, the invention relates to a ceiling system comprising a suspended lattice grid including inverted tee main runners and inverted cross tees, and ceiling tiles carried by the suspended lattice grid, the tiles having a width corresponding to the centre distance of the inverted tee main runners and a length corresponding to the centre distance of the inverted cross tees, each tile on two opposite sides having slots for receiving the flanges of opposite inverted tee main runners such that the downwardly facing slot surfaces of the tile rest on the upper flange surfaces such that the lower side portions of the tile below the downwardly facing slot surfaces form first tongues concealing the inverted tee main runners, the upper portions of said two opposite sides adjacent the slots being cut back enabling, together with said slots, the tile to be positioned on the inverted tee main runners, the upper portions of the remaining two opposite ends of the tile also being cut back allowing the back of the tile to fit between the inverted cross tees while leaving lower tongues to conceal the inverted cross tees, the tiles being symmetrical about their centreline axis thus having slots being mirror images.
  • The object of the invention is to improve a ceiling system of this kind such that when the ceiling tiles are fitted they conceal the grid and are fully demountable.
  • This object is achieved by the ceiling system being that characterized in that the upper portion adjacent each slot has a single step, the thickness of the portion being reduced by the step at the end closer to the cut-back, the upper step surface, in the plane of the tile, being flat over its width for resting on the upper flat flange surfaces of the associated inverted tee main runner and having a depth ensuring that the tile is equally supported on the two associated upper flange surfaces by engagement between the edges of the flanges, and the bottoms of the steps, and
       the dimensions of each slot are such that a first tongue of a tile can pass into the slot of an adjacent tile, thereby enabling a tile to be fully independently demountable without disturbing adjacent tiles.
  • The invention will now be described in more detail with reference to the accompanying drawings, wherein:
    • Figure 1 is a schematic view of a known ceiling system,
    • Figure 2 is a schematic view taken along the line B-B in figure 1.
    • Figure 3 is a schematic view of an other known ceiling system.
    • Figure 4 is a schematic view taken along the line D-D in figure 3.
    • Figure 5 is a schematic view of a ceiling system according to the invention.
    • Figure 6 is a schematic view taken along the line F-F in figure 5.
    • Figures 7-9 are schematic views illustrating, the mounting of a tile in a ceiling system according to the invention.
  • There are two basic forms of suspended ceilings:
    • 1/ Concealed Grid Systems
      The object is to conceal the suspension grid from view when the ceiling tiles are fixed in position. A typical concealed fix ceiling tile edge detail is shown in figures 1 and 2. The concealed grid suspension section is fixed to a channel sub-grid with wire clips, in turn the sub-grid is suspended on wire hangers fixed to the structural soffite. The ceiling tiles are then slid along the grid into position.
    • 2/ Exposed Grid System
      Figures 3 and 4 show a typical exposed grid system consisting of inverted tee sections. The main tee is suspended from the structural soffite on wire hangers and cross tees are fixed to the main tee in various ways so as to form a fairly rigid accurated lattice-work with the flanges of main and cross tees at the same level. The ceiling tiles are simply laid on the inverted tee section grid leaving the flange of the grid exposed to view.
  • FR-A-1 152 496 discloses a ceiling system comprising concealed inverted tee runners and ceiling boxes suspended on the runners. No cross tees are provided. Instead on the two corresponding sides, each celing box has vertical walls which are to be in direct stabilizing contact with the walls of the adjacent boxes. The remaining two sides of the box also have vertical walls which are to be in direct stabilizing contact with the walls of the adjacent boxes. In addition thereto, the first mentioned walls have thin supporting end hooks for cooperation with ribs at the edges of the flanges of the inverted tee runners.
  • The trend in the suspended ceiling market is moving away from concealed suspension systems mainly because the various patented methods with exposed grid systems of connecting main tees to cross tees has led to a quick, accurate and easy to install system popular with on-site operatives and less expensive to the customer.
  • Suspended ceiling tiles currently produced for either concealed or exposed grid systems cannot be fixed to standard exposed grid systems such as to conceal the grid and be fully demountable. However, a ceiling tile manufactured in accordance with the invention incorporating edges as shown in figure 5 can be fixed to a standard exposed grid system and will conceal the grid from view and each tile will be independently demountable.
  • Figure 5 shows a ceiling tile 1 where the dimension 'X' equals the width of the upper part of flange 2 of the inverted tee grid 3. The detail of the ceiling tile 1 below the the flange 2 shows a bevelled edge 4. (This detail can vary to correspond with current concealed type ceiling tiles and could be square, channeled or any desired shape).
  • The depth of the slots 5 & 6 related to the ceiling tile edges 7 & 8 is critical and must also correspond to the dimension of the flange 2 of the inverted tee 3 (small tolerances will have to be allowed for practical purposes).
  • The overall dimension of the ceiling tile 1 below the flange 2 of the inverted tee 3 will be the same as the centres of the tee 3 whereas the overall dimension of the back of the ceiling tile 1 will be reduced by 'X' (2 x 0.5 'X' at either edge). The depth of slot 5 will be 'X' to allow the tile to be slid fully onto the R.H. flange 2 of the inverted tee 3 (cf. also figs. 7 & 8). Thereafter the ceiling tile 1 is pushed upwards until the slot 6 is level with the L.H. flange 2 of the inverted tee 3. The ceiling tile 1 is then slid onto the left hand flange 2 of the inverted tee (3) (cf. also figs. 8 & 9). The depth of the top section of slot 6 0.5 'X' will ensure the ceiling tile 1 is equally supported on half of the available flange 2 i.e. half the possible bearing available.
  • Figure 6 shows the ceiling tile 1 with a cut-out section 9 on the back right and left hand sides and an overall rear dimension which is -2 'X' (2 x 1 'X') less than the inside stalk of the inverted tee 3. This allows the back portion of the tile 1 to fit between the flanges of the inverted tee grid 3.
  • The detail of figure 6 below the flange 2 is not critical and can be any of the afore metioned details and could incorporate a slot to receive a spline similar to the standard concealed ceiling grid ceiling tiles (figure 2).
  • Ceiling tiles manufactured in accordance with the invention incorporating edges shown in figure 5 have the following advantages:-
    • Fully demountable
    • Combines the advantages of exposed grid systems (economic, popular, accurate) with the asthetic advantage of a concealed grid system ceiling.
    • Quicker therefore cheaper to install than conventional concealed systems.
    • Existing exposed grid system ceilings can be changed to concealed type ceilings at will or when normal re-placement occurs (approx every 10 years) without removing the existing exposed grid system.
    • The new edge detail concealed ceiling tiles are fixed to the exposed grid system within the depth of the exposed grid (impossible with an exposed grid type tile), a great advantage where suspension depth is limited.

Claims (1)

  1. A ceiling system comprising a suspended lattice grid (3) including inverted tee main runners and inverted cross tees, and ceiling tiles (1) carried by the suspended lattice grid, the tiles having a width corresponding to the centre distance of the inverted tee main runners and a length corresponding to the centre distance of the inverted cross tees, each tile on two opposite sides having slots (5, 6) for receiving the flanges (2) of opposite inverted tee main runners such that the downwardly facing slot surfaces of the tile rest on the upper flange surfaces such that the lower side portions of the tile below the downwardly facing slot surfaces form first tongues concealing the inverted tee main runners, the upper portions of said two opposite sides adjacent the slots (5, 6) being cut back (7, 8) enabling, together with said slots, the tile to be positioned on the inverted tee main runners, the upper portions of the remaining two opposite ends of the tile also being cut back (9) allowing the back of the tile (1) to fit between the inverted cross tees while leaving lower tongues to conceal the inverted cross tees, the tiles (1) being symmetrical about their centreline axis thus having slots (5, 6) being mirror images, characterized in that the upper portion adjacent each slot (5, 6) has a single step, the thickness of the portion being reduced by the step at the end closer to the cut-back, the upper step surface, in the plane of the tile, being flat over its width for resting on the upper flat flange surfaces of the associated inverted tee main runner and having a depth ensuring that the tile (1) is equally supported on the two associated upper flange surfaces by engagement between the edges of the flanges (2), and the bottoms of the steps, and
       the dimensions of each slot are such that a first tongue of a tile can pass into the slot of an adjacent tile, thereby enabling a tile to be fully independently demountable without disturbing adjacent tiles.
EP88900467A 1987-01-19 1987-12-30 Improvements relating to ceiling tiles and exposed grid suspension systems Revoked EP0344164B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB878701001A GB8701001D0 (en) 1987-01-19 1987-01-19 Ceiling tiles
GB8701001 1987-01-19
PCT/GB1987/000924 WO1988005486A1 (en) 1987-01-19 1987-12-30 Improvements relating to ceiling tiles and exposed grid suspension systems

Publications (2)

Publication Number Publication Date
EP0344164A1 EP0344164A1 (en) 1989-12-06
EP0344164B1 true EP0344164B1 (en) 1994-12-21

Family

ID=10610823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88900467A Revoked EP0344164B1 (en) 1987-01-19 1987-12-30 Improvements relating to ceiling tiles and exposed grid suspension systems

Country Status (9)

Country Link
EP (1) EP0344164B1 (en)
KR (1) KR890700723A (en)
AT (1) ATE116028T1 (en)
AU (1) AU1053688A (en)
CY (1) CY1612A (en)
DE (1) DE3750902T2 (en)
FI (1) FI97313C (en)
GB (2) GB8701001D0 (en)
WO (1) WO1988005486A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE142692T1 (en) 1989-05-10 1996-09-15 Somatogen Inc PRODUCTION OF HEMOGLOBIN AND ANALOGUES THEREOF BY BACTERIA OR YEAST
GB2234764A (en) * 1989-08-01 1991-02-13 Cape Building Prod Ltd Panel support system
DE9417528U1 (en) * 1994-11-01 1994-12-22 Gema Metalldecken Ag Ceiling tile
US6108994A (en) * 1998-08-12 2000-08-29 Armstrong World Industries, Inc. Ceiling panel
US6179451B1 (en) * 1999-02-18 2001-01-30 Armstrong World Industries, Inc. Integrated indirect light and ceiling system
US6260325B1 (en) 1999-03-17 2001-07-17 Usg Interiors, Inc. Suspended concealed grid accessible ceiling system
SE521524C2 (en) 2000-05-09 2003-11-11 Ecophon Ab Ceiling tile has protruding ridge that is formed by inserting least one of a metal or plastic element in transverse edge surface of fiber material
WO2002014473A2 (en) 2000-08-15 2002-02-21 Board Of Trustees Of The University Of Illinois Animals expressing exogenous igf-i in their milk
US20050014932A1 (en) 2003-05-15 2005-01-20 Iogenetics, Llc Targeted biocides
WO2008066658A2 (en) 2006-11-03 2008-06-05 The Trustees Of Princeton University Engineered cellular pathways for programmed autoregulation of differentiation
US7765762B2 (en) 2008-01-08 2010-08-03 Usg Interiors, Inc. Ceiling panel
ITPD20090358A1 (en) * 2009-11-26 2011-05-27 Sgambaro Giuliano S R L PANEL FOR MODULAR CEILINGS AND INSPECTABLE MODULAR CEILING MADE WITH A SERIES OF SUCH PANELS
CA2971595C (en) 2014-12-18 2023-10-31 Armstrong World Industries, Inc. Integrated ceiling and light system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE548166A (en) * 1955-05-27
GB857773A (en) * 1957-01-08 1961-01-04 Sound Control Ltd Improvements in or relating to ceilings
GB833307A (en) * 1958-03-25 1960-04-21 Anders Palmer Improvements in or relating to sub-ceiling panel
FR1512496A (en) * 1962-06-20 1968-02-09 Gartenmann & Cie Sa C Suspended ceiling
IE33220B1 (en) * 1968-09-30 1974-04-17 United States Gypsum Co Support member and removable panel ceiling construction including same
US4279110A (en) * 1979-03-19 1981-07-21 Palazzolo Paul H Ceiling mirror assembly
GB2163787A (en) * 1984-08-23 1986-03-05 Donald George Gordon Ceiling tiles for fitting on and concealing an already-installed inverted-T exposed grid
DE3527731C1 (en) * 1985-08-02 1986-11-13 Durlum-Leuchten Gmbh Lichttechnische Spezialfabrik, 7860 Schopfheim Suspended ceiling

Also Published As

Publication number Publication date
ATE116028T1 (en) 1995-01-15
DE3750902D1 (en) 1995-02-02
GB2200151A (en) 1988-07-27
GB8707575D0 (en) 1987-05-07
GB2200151B (en) 1990-12-19
AU1053688A (en) 1988-08-10
KR890700723A (en) 1989-04-27
WO1988005486A1 (en) 1988-07-28
CY1612A (en) 1992-07-10
FI893454A0 (en) 1989-07-17
FI97313B (en) 1996-08-15
DE3750902T2 (en) 1995-08-31
EP0344164A1 (en) 1989-12-06
GB8701001D0 (en) 1987-02-18
FI893454A (en) 1989-07-17
FI97313C (en) 1996-11-25

Similar Documents

Publication Publication Date Title
EP0344164B1 (en) Improvements relating to ceiling tiles and exposed grid suspension systems
EP1154089B1 (en) Ceiling tile
US5195289A (en) Trim system for suspension ceilings
US4089146A (en) Suspended ceiling
US7930864B2 (en) Mounting clip
AU659388B2 (en) Trim system for suspension ceilings
EP0162166B1 (en) Facing material for building and method for connecting same
US4926606A (en) Ornamental ceiling system
US4744188A (en) Suspended island ceiling system
CA1065573A (en) Ceiling support grid system
US5239801A (en) Clip-on wooden drop ceiling
CA1304212C (en) Electrical raceway floor track
US5311719A (en) Metal panels for accessible concealed ceiling system
EP1083272A1 (en) Molded plastic siding panel
US4679375A (en) Suspension ceiling grid system with narrow-faced grid
US6079177A (en) Removable ceiling panel assembly
US4920719A (en) Method and apparatus of positioning a new ceiling over an existing ceiling
JPH10501037A (en) Method for interconnecting wallboards and novel wall elements
EP1132540A1 (en) A method of installing a set of ceiling panels
US7269927B2 (en) Suspended ceiling assembly
GB2163787A (en) Ceiling tiles for fitting on and concealing an already-installed inverted-T exposed grid
EP1261782B1 (en) A method of installing a set of ceiling panels
US6532706B1 (en) Gridless ceiling system
GB2273511A (en) Concealed tee suspended ceilings
GB2321479A (en) Roof ridge tiles, and their fixing

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19890630

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ECOPHON AKTIEBOLAG

17Q First examination report despatched

Effective date: 19910823

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 116028

Country of ref document: AT

Date of ref document: 19950115

Kind code of ref document: T

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19941231

REF Corresponds to:

Ref document number: 3750902

Country of ref document: DE

Date of ref document: 19950202

ET Fr: translation filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19951004

Year of fee payment: 9

26 Opposition filed

Opponent name: ARMSTRONG WORLD INDUSTRIES, INC.

Effective date: 19950919

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19951127

Year of fee payment: 9

Ref country code: CH

Payment date: 19951127

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19951212

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19951213

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19951229

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19951230

Year of fee payment: 9

NLR1 Nl: opposition has been filed with the epo

Opponent name: ARMSTRONG WORLD INDUSTRIES, INC.

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960130

Year of fee payment: 9

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state

Free format text: 960621

27W Patent revoked

Effective date: 19960621

NLR2 Nl: decision of opposition