EP0664365B1 - Ceiling panel - Google Patents
Ceiling panel Download PDFInfo
- Publication number
- EP0664365B1 EP0664365B1 EP94120932A EP94120932A EP0664365B1 EP 0664365 B1 EP0664365 B1 EP 0664365B1 EP 94120932 A EP94120932 A EP 94120932A EP 94120932 A EP94120932 A EP 94120932A EP 0664365 B1 EP0664365 B1 EP 0664365B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ceiling
- sound
- panel according
- ceiling panel
- adhesive
- 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.)
- Expired - Lifetime
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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
- E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
- E04B9/045—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like being laminated
Definitions
- the invention relates to a ceiling tile with a lower, room-side surface after laying and with a ceiling-side surface for a false ceiling that also has support profiles, consisting of at least two flat elements arranged on top of one another and made of sound-absorbing material. Barrier-serving adhesive are connected to one another, the surface on the room side being smooth or structured.
- Such a ceiling panel consisting of two panel elements which are connected to one another by an intermediate adhesive layer is known from GB-A-2 151 547.
- both the room-side and the ceiling-side surface are smooth.
- the sticky intermediate layer is plastically deformable under shear stress and is able to absorb sound energy, which improves the sound-absorbing effect of the ceiling tile.
- the extent of this sound insulation is not sufficient for many applications and wishes.
- Public buildings, administration buildings, school buildings and hospitals are increasingly provided with suspended false ceilings (suspended ceilings) and also equipped with subordinate partitions in order to be able to adapt the room layout to requirements and to be able to change them if necessary.
- the partitions are enough usually only up to the false ceiling, while the ceiling cavity located above the false ceiling extends from one retaining wall to the next retaining wall and possibly also over the entire building area. Connected with this are sound transmissions also across partitions into neighboring rooms.
- the sound passage through the false ceiling and the ceiling cavity must not be greater than the direct sound passage through the partition itself.
- the required sound insulation values cannot be achieved with the known ceiling tiles, and in order to achieve the required sound insulation values with conventional false ceilings, mineral wool is used for sound absorption in Ceiling cavity placed on the false ceiling.
- the invention is therefore based on the object to provide measures with the aid of which it is possible to directly improve the sound-absorbing properties of the ceiling panel itself in such a way that it is then no longer necessary to additionally lay mineral wool loose in the ceiling cavity.
- the invention provides that the ceiling-side surface in the installed state is provided with depressions and / or sound absorption openings.
- the material for the two plate elements is a known, sound-absorbing or sound-absorbing material, such as, for example, a mixture of mineral wool, filler and natural binder, for example in the form of starch.
- the density of these plate elements can be in the order of 200 kg to 400 kg per m 3 .
- the adhesive layer With the help of the adhesive layer, the passage of sound is additionally dampened.
- the sound absorption openings on the top side of the ceiling panel cause a reduction in the sound waves in the ceiling cavity, insofar as they reach the ceiling panel through to the ceiling cavity and then propagate there.
- the single figure shows, in section, part of an intermediate ceiling 1 with two laterally broken off different ceiling panels 2 and 3, which rest on the legs of a support profile 4.
- each ceiling plate 2 or 3 consists of two planes arranged one on top of the other, e.g. Mineral wool 5 and binding agent 6 having plate elements 7 and 8, which are further connected to one another with the aid of an adhesive which also serves as a sound insulation barrier layer 9.
- mineral wool e.g. Perlite
- the perlite is an inorganic rock that contains potassium, aluminum and silicates and is processed in the form of sand or finely ground.
- Mineral wool is to be understood as common mineral fibers in the broadest sense.
- the surface 10 or 10 ′ of the ceiling panels 2, 3 lying at the bottom or on the room side in the installed state can be smooth or structured, as shown in the single figure.
- the surface 10 has a multiple application of paint.
- the room-side surface 10 of the ceiling panel 2 is smooth, it can also be needled according to the surface 10 'of the ceiling panel 3 and thus have small sound absorption openings 11.
- the surfaces 10 and 10 'of the ceiling panels 2, 3 can thus be smooth or needled, grained, grooved, corrugated, perforated or designed in any other way and thus be sound-absorbing, as required.
- the other, ceiling-side surfaces 12 and 12 'of the two ceiling panels 2 and 3 are provided with sound-absorbing depressions and / or sound absorption openings 13. Regardless of the design of the room-side surface 10, the ceiling-side surfaces 12 are thus always sound-absorbing.
- the adhesive serving as a sound insulation barrier layer 9 connects the two plate elements 7 and 8 over the entire surface.
- the contact surfaces of the two plate elements 7 and 8 facing the adhesive can be unprocessed.
- the adhesive used for bonding and as a sound insulation barrier layer 9 is preferably an inorganic adhesive.
- the density and / or the material thickness of the two plate elements 7 and 8 of each ceiling plate 2, 3 can be different. However, this is imperative not, and also results from the respective requirements.
- the plate elements shown in section and broken off in the single figure have commercially available dimensions of a preferred exemplary embodiment. This means that the density is 200 to 400 kg per m 3 and preferably 270 to 350 kg per m 3 .
- the preferred ceiling panel 3 consists of two panel elements 7 and 8 and has between them a sound-absorbing barrier layer 9 and sound-absorbing openings 11 and 13 in their two surfaces 10 'and 12' serving as the top and bottom.
- the invention is not restricted to this preferred embodiment; rather, modifications are also possible within the scope of the patent claims. So it goes without saying that the material for the plate elements 7 and 8 is not only sound-absorbing, but also sound-absorbing.
Description
Die Erfindung bezieht sich auf eine Deckenplatte mit einer nach dem Verlegen unteren, raumseitigen Oberfläche und mit einer deckenseitigen Oberfläche für eine zugleich Trageprofile aufweisende Zwischendecke, bestehend aus mindestens zwei flächig aufeinander angeordneten, aus schalldämmendem Werkstoff bestehenden Plattenelementen, die mit Hilfe von zugleich als Schalldämm-Sperrschicht dienendem Klebstoff miteinander verbunden sind, wobei die raumseitige Oberfläche glatt oder strukturiert ist.The invention relates to a ceiling tile with a lower, room-side surface after laying and with a ceiling-side surface for a false ceiling that also has support profiles, consisting of at least two flat elements arranged on top of one another and made of sound-absorbing material. Barrier-serving adhesive are connected to one another, the surface on the room side being smooth or structured.
Eine derartige Deckenplatte aus zwei Plattenelementen, die durch eine Klebstoff-Zwischenschicht miteinander verbunden sind, ist aus GB-A-2 151 547 bekannt.Such a ceiling panel consisting of two panel elements which are connected to one another by an intermediate adhesive layer is known from GB-A-2 151 547.
Dort sind sowohl die raumseitige wie die deckenseitige Oberfläche glatt ausgeführt. Die klebrige Zwischenschicht ist unter Scherbeanspruchungen plastisch verformbar und vermag dabei Schallenergie zu absorbieren, was die schalldämmende Wirkung der Deckenplatte verbessert. Das Ausmaß dieser Schalldämmung reicht jedoch für viele Anwendungsfälle und Wünsche noch nicht aus.There, both the room-side and the ceiling-side surface are smooth. The sticky intermediate layer is plastically deformable under shear stress and is able to absorb sound energy, which improves the sound-absorbing effect of the ceiling tile. However, the extent of this sound insulation is not sufficient for many applications and wishes.
Öffentliche Gebäude, Verwaltungsgebäude, Schulbauten und Krankenhäuser werden zunehmend mit abgehängten Zwischendecken (Unterdecken) versehen und auch mit untergestellten Trennwänden ausgestattet, um die Raumaufteilung den Erfordernissen anpassen zu können und um sie ggf. auch wieder ändern zu können. Die Trennwände reichen in der Regel nur bis zur Zwischendecke, während sich der über der Zwichendecke befindliche Deckenhohlraum von einer Stützwand bis zur nächsten Stützwand und gegebenenfalls auch über die gesamte Gebäudefläche erstreckt. Verbunden hiermit sind Schallübertragungen auch über Trennwände hinweg in benachbarte Räume.Public buildings, administration buildings, school buildings and hospitals are increasingly provided with suspended false ceilings (suspended ceilings) and also equipped with subordinate partitions in order to be able to adapt the room layout to requirements and to be able to change them if necessary. The partitions are enough usually only up to the false ceiling, while the ceiling cavity located above the false ceiling extends from one retaining wall to the next retaining wall and possibly also over the entire building area. Connected with this are sound transmissions also across partitions into neighboring rooms.
Grundsätzlich darf der Schalldurchgang durch die Zwischendecke und den Deckenhohlraum nicht größer sein als der direkte Schalldurchgang durch die Trennwand selbst. Die geforderten Schalldämmwerte sind mit den bekannten Deckenplatten nicht zu erzielen, und um die geforderten Schalldämmwerte bei herkömmlichen Zwischendecken zu erreichen, wird Mineralwolle zur Schalldämpfung im Deckenhohlraum auf die Zwischendecke aufgelegt.In principle, the sound passage through the false ceiling and the ceiling cavity must not be greater than the direct sound passage through the partition itself. The required sound insulation values cannot be achieved with the known ceiling tiles, and in order to achieve the required sound insulation values with conventional false ceilings, mineral wool is used for sound absorption in Ceiling cavity placed on the false ceiling.
Die Verwendung von lose verlegter Mineralwolle auf der Zwischendecke führt zu der gewünschten Schalldämpfung. Die Mineralwolle bringt aber nur dann das gewünschte Ergebnis, wenn sie sorgfältig und ordnungsgemäß verlegt ist, Hiermit sind ein erheblicher Arbeitsaufwand und entsprechende Kosten verbunden. Problematisch ist die Verwendung von lose verlegter Mineralwolle darüber hinaus aber dann, wenn es erforderlich ist, Servicearbeiten oder Reparaturen im Deckenhohlraum vorzunehmen, wozu die Mineralwolle zunächst, entfernt und danach wieder ordnungsgemäß verlegt werden müßte. In der Regel geschieht dies nicht mit der Folge, daß es häufig zu einer Verschlechterung der Schalldämmwerte kommt, wenn auch nur geringfügige Instandsetzungsarbeiten oder Reparaturen im Deckenhohlraum vorgenommen werden.The use of loosely laid mineral wool on the false ceiling leads to the desired sound absorption. The mineral wool only brings the desired result if it is laid carefully and properly. This involves a considerable amount of work and corresponding costs. The use of loosely laid mineral wool is also problematic when it is necessary to carry out service work or repairs in the ceiling cavity, for which the mineral wool would first have to be removed and then properly laid again. As a rule, this does not result in the sound insulation values often deteriorating even if only minor repair work or repairs are carried out in the ceiling cavity.
Der Erfindung liegt daher die Aufgabe zugrunde, Maßnahmen vorzusehen, mit deren Hilfe es möglich ist, unmittelbar die schalldämmenden Eigenschaften der Deckenplatte selbst, derart zu verbessern, daß es dann nicht mehr erforderlich ist, zusätzlich Mineralwolle lose im Deckenhohlraum zu verlegen.The invention is therefore based on the object to provide measures with the aid of which it is possible to directly improve the sound-absorbing properties of the ceiling panel itself in such a way that it is then no longer necessary to additionally lay mineral wool loose in the ceiling cavity.
Zur Lösung dieser Aufgabe sieht die Erfindung vor, daß die im eingebauten Zustand oben liegende, deckenseitige Oberfläche mit Vertiefungen und/oder Schallabsorptions-Öffnungen versehen ist.To achieve this object, the invention provides that the ceiling-side surface in the installed state is provided with depressions and / or sound absorption openings.
Als Werkstoff für die beiden Plattenelemente dient ein an sich bekanntes, schalldämmendes bzw. schallabsorbierendes Material, wie z.B, eine Mischung aus Mineralwolle, Füllstoff und natürlichem Bindemittel z.B. in Gestalt von Stärke. Das Raumgewicht dieser Plattenelemente kann in einer Größenordnung von 200 kg bis 400 kg pro m3 liegen. Mit Hilfe der Klebstoffschicht wird der Schalldurchgang zusätzlich gedämpft. Die Schallabsorptions-Öffnungen auf der deckenseitigen Oberseite der Deckenplatte bewirken eine Reduzierung der im Deckenhohlraum befindlichen Schallwellen, soweit diese überhaupt durch die Deckenplatte bis in den Deckenhohlraum gelangen und sich dann dort ausbreiten. Im Ergebnis erhählt, man somit durch Verwendung von z.B. zwei oder auch mehr, auch Mineralwolle, Füllstoff und Bindemittel oder aus Perliten (ein anorganisches Kalium-Aluminium-Silikat-Gestein) und Altpapier, Ton sowie Bindemittel bestehenden Plattenelementen sowie durch die Klebstoff-Zwischenschicht und die ober seitigen Vertiefungen bzw. Schallabsorptions-Öffnungen eine Deckenplatte, die allen Anforderungen in hohem Maße sowie durch die Klebstoff-Zwischenschicht und die ober seitigen Vertiefungen bzw. Schallabsorptions-Öffnungen gerecht wird und das Verlegen von zusätzlich lose aufgelegter Mineralwolle überflüssig macht.The material for the two plate elements is a known, sound-absorbing or sound-absorbing material, such as, for example, a mixture of mineral wool, filler and natural binder, for example in the form of starch. The density of these plate elements can be in the order of 200 kg to 400 kg per m 3 . With the help of the adhesive layer, the passage of sound is additionally dampened. The sound absorption openings on the top side of the ceiling panel cause a reduction in the sound waves in the ceiling cavity, insofar as they reach the ceiling panel through to the ceiling cavity and then propagate there. Chosen in the result, you can use two or more, including mineral wool, filler and binder or perlites (an inorganic potassium-aluminum-silicate rock) and waste paper, clay and binder, as well as through the adhesive intermediate layer and the upper-side depressions or sound absorption openings a ceiling tile that meets all requirements to a high degree as well as through the adhesive intermediate layer and the upper-side depressions or sound absorption openings and makes the laying of loose mineral wool unnecessary.
Vorteilhafte Ausgestaltungen der Erfindung gehen aus den Unteransprüchen in Verbindung mit der Beschreibung und der Zeichnung hervor.Advantageous embodiments of the invention emerge from the subclaims in conjunction with the description and the drawing.
Die einzige Figur zeigt, im Schnitt einen Teil einer Zwischendecke 1 mit zwei seitlich abgebrochenen unterschiedlichen Deckenplatten 2 und 3, die auf Schenkeln eines Trageprofiles 4 aufliegen.The single figure shows, in section, part of an
Jede Deckenplatte 2 bzw. 3 besteht gemäß Ausführungsbeispiel aus zwei flächig aufeinander angeordneten, z.B. Mineralwolle 5 und Bindemittel 6 aufweisenden Plattenele-menten 7 und 8, die ferner mit Hilfe eines zugleich als Schalldämm-Sperrschicht 9 dienenden Klebstoffes miteinander verbunden sind. Für die Herstellung der Plattenelemente 7 und 8 können anstelle von Mineralwolle aber auch andere Werkstoffe wie z.B. Perlite zusammen mit Altpapier und Ton sowie Bindemittel Verwendung finden. Bei den Perliten handelt, es sich um ein anorganisches Gestein, das Kalium, Aluminium sowie Silikate enthält und in Form von Sand bzw. fein gemahlen verarbeitet wird.According to the exemplary embodiment, each
Unter Mineralwolle sind übliche Mineralfasern in weitesten Sinne zu verstehen.Mineral wool is to be understood as common mineral fibers in the broadest sense.
Die im eingebauten Zustand unten liegende oder raumseitige Oberfläche 10 bzw. 10' der Deckenplatten 2, 3 kann glatt oder strukturiert sein, wie dies in der einzigen Figur dargestellt ist. In der Regel weist die Oberfläche 10 einen mehrfachen Farbauftrag auf. Während die raumseitige Oberfläche 10 der Deckenplatte 2 glatt ist, kann sie aber auch entsprechend der Oberfläche 10' der Deckenplatte 3 genadelt sein und somit kleine Schallabsorptions-Öffnungen 11 auf weisen. Die Oberflächen 10 bzw. 10' der Deckenplatten 2, 3 können somit je nach Bedarf glatt oder genadelt, genarbt, gerillt, geriffelt, gelocht oder in sonstiger Weise gestaltet und somit schallabsorbierend sein.The
Die anderen, deckenseitigen Oberflächen 12 und 12' der beiden Deckenplatten 2 und 3 sind mit schallschluckenden Vertiefungen und/oder Schallabsorptions-Öffnungen 13 versehen. Unabhängig von der Gestaltung der raumseitigen Oberfläche 10 sind die deckenseitigen Oberflächen 12 somit immer schallabsorbierend gestaltet.The other, ceiling-
Der als Schalldämm-Sperrschicht 9 dienende Klebstoff verbindet die beiden Plattenelemente 7 und 8 vollflächig. Die dem Klebstoff zugewandten Kontaktflächen der beiden Plattenelemente 7 und 8 können unbearbeitet sein. Der zum Verbinden und als Schalldämm-Sperrschicht 9 dienende Klebstoff ist vorzugsweise ein anorganischer Klebstoff.The adhesive serving as a sound insulation barrier layer 9 connects the two
Das Raumgewicht und/oder die Materialstärke der beiden Plattenelemente 7 und 8 einer jeden Deckenplatte 2, 3 können verschieden sein. Zwingend notwendig ist dies jedoch nicht, und ergibt, sich auch aufgrund der jeweiligen Anforderungen. Die in der einzigen Figur im Schnitt sowie abgebrochen dargestellten Plattenelemente weisen handelsübliche Abmessungen eines bevorzugten Ausführungsbeispieles auf. Dies bedeutet, daß das Raumgewicht 200 bis 400 kg pro m3 und vorzugsweise 270 bis 350 kg pro m3 beträgt.The density and / or the material thickness of the two
Die bevorzugte Deckenplatte 3 besteht aus zwei Plattenelementen 7 und 8 und weist zwischen diesen eine schalldämmende Sperrschicht 9 und schallabsorbierende Öffnungen 11 und 13 in ihren beiden, als Oberseite und als Unterseite dienenden Oberflächen 10' und 12' auf. Die Erfindung ist aber nicht auf diese bevorzugte Ausführungsform beschränkt, vielmehr sind auch noch Abwandlungen im Rahmen der Patentansprüche möglich. So versteht es sich, daß der Werkstoff für die Plattenelemente 7 und 8 nicht ausschließlich schalldämmend, sondern auch schallabsorbierend ist.The
Claims (8)
- A ceiling panel having a room-side surface (10 or 10') which is the downward surface after the panel is fitted and a ceiling-side surface (12 or 12') for a false ceiling (1) which at the same time has support profile members (4), comprising at least two panel elements (7, 8) which are arranged in surface contact one upon the other and which comprise sound-attenuating material and which are connected together by means of adhesive serving at the same time as a sound-attenuating barrier layer (9), wherein the room-side surface (10 or 10') is smooth or structured, characterised in that the ceiling-side surface (12 or 12') which is upward in the installed condition is provided with depressions and/or sound-absorption openings (13).
- A ceiling panel according to claim 1 characterised in that the depressions and/or sound-absorption openings (11, 13) are arranged at the room side and the ceiling side.
- A ceiling panel according to one or more of the preceding claims characterised in that the adhesive serving as the sound-attenuating barrier layer (9) is arranged over the full surface area.
- A ceiling panel according to one or more of the preceding claims characterised in that the density of the panel elements (7, 8) is 200 to 400 kg/m and preferably 270 to 350 kg/m3.
- A ceiling panel according to one or more of the preceding claims characterised in that the density and/or the material thickness of the two panel elements (7, 8) is different.
- A ceiling panel according to one or more of the preceding claims characterised in that an inorganic adhesive is provided as the adhesive.
- A ceiling panel according to one or more of the preceding claims characterised in that the panel elements (7, 8) contain mineral wool (5) as well as filler and binding agent (6).
- A ceiling panel according to one or more of the preceding claims characterised in that the panel elements (7, 8) contain perlite (potassium aluminium silicate) as well as waste paper, clay and binding agent.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4400666 | 1994-01-13 | ||
| DE4400666A DE4400666C2 (en) | 1994-01-13 | 1994-01-13 | Ceiling tile |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0664365A1 EP0664365A1 (en) | 1995-07-26 |
| EP0664365B1 true EP0664365B1 (en) | 1997-11-19 |
| EP0664365B2 EP0664365B2 (en) | 2001-03-28 |
Family
ID=6507766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94120932A Expired - Lifetime EP0664365B2 (en) | 1994-01-13 | 1994-12-30 | Ceiling panel |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0664365B2 (en) |
| DE (2) | DE4400666C2 (en) |
| PL (1) | PL184689B1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19532609C1 (en) * | 1995-09-04 | 1997-01-16 | Klaus Kessler | Ceiling element for renovating suspended installation ceilings |
| DE19826149A1 (en) | 1998-06-12 | 1999-12-16 | Illbruck Gmbh | Ceiling element for a composite ceiling |
| WO2002042576A1 (en) * | 2000-11-24 | 2002-05-30 | Rockwool International A/S | A sound reducing board and a process for the manufacture of the board |
| DE20115304U1 (en) | 2001-09-17 | 2001-12-06 | Amf Mineralfaser Gmbh | Ceiling tile |
| CN113502966B (en) * | 2021-07-22 | 2022-03-25 | 深圳市郑中设计股份有限公司 | Energy-saving and environment-friendly indoor decoration integrated ceiling, and installation method and equipment thereof |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2450911A (en) † | 1943-07-20 | 1948-10-12 | Armstrong Cork Co | Acoustical structure |
| DE1869160U (en) * | 1962-07-19 | 1963-03-21 | Lohmann K G | SOUND-ABSORBING PLATE OR TRAIN. |
| DE2743277A1 (en) † | 1977-09-27 | 1979-04-05 | Odenwald Faserplatten | Paper transport system for teleprinters - has rotating pin wheel at each platen end, with movable spokes carrying pins |
| US4428454A (en) * | 1981-09-24 | 1984-01-31 | Capaul Raymond W | Acoustical panel construction |
| DE3215811C2 (en) * | 1982-04-28 | 1985-01-03 | Hans Lengwil Thurgau Wenger | Heat-insulating and fire-retardant composite panel and use of this composite panel |
| JPS60102310U (en) * | 1983-12-16 | 1985-07-12 | 株式会社ブリヂストン | Vibration damping and sound insulation board |
| DE3629863A1 (en) * | 1986-09-02 | 1988-03-10 | Gruenzweig & Hartmann Montage | Counter-ceiling which comprises metal modules |
| DE8626198U1 (en) * | 1986-10-01 | 1986-11-27 | Dig Deutsche Innenbau Gmbh, 4330 Muelheim, De | |
| DE4119353C1 (en) * | 1991-06-12 | 1992-12-17 | Deutsche Rockwool Mineralwoll Gmbh, 4390 Gladbeck, De | |
| DE4213388A1 (en) * | 1992-02-11 | 1993-08-12 | Heinz B Mader | Sound or heat-insulating constructional part - comprises rock wool esp, basalt rock wool made of yarns or fibres drawn from rock melt and bound using phenol-free binders |
| FR2688253B1 (en) * | 1992-03-09 | 1996-02-02 | Clestra Hauserman Sa | AUDIO-VIDEO RECORDING STUDIO OR CONCERT HALL. |
| DE9304227U1 (en) * | 1993-03-09 | 1993-06-17 | Gutermuth Sen., Paul, 6456 Langenselbold, De | |
| DE9400423U1 (en) * | 1994-01-13 | 1994-03-17 | Odenwald Faserplatten | Ceiling tile |
-
1994
- 1994-01-13 DE DE4400666A patent/DE4400666C2/en not_active Expired - Fee Related
- 1994-12-30 DE DE59404633T patent/DE59404633D1/en not_active Expired - Lifetime
- 1994-12-30 EP EP94120932A patent/EP0664365B2/en not_active Expired - Lifetime
-
1995
- 1995-01-10 PL PL95306735A patent/PL184689B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0664365A1 (en) | 1995-07-26 |
| PL184689B1 (en) | 2002-11-29 |
| DE4400666A1 (en) | 1995-07-27 |
| EP0664365B2 (en) | 2001-03-28 |
| DE59404633D1 (en) | 1998-01-02 |
| DE4400666C2 (en) | 1996-08-08 |
| PL306735A1 (en) | 1995-07-24 |
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