GB1592964A - Manufacture of insoles for boots and shoes - Google Patents
Manufacture of insoles for boots and shoes Download PDFInfo
- Publication number
- GB1592964A GB1592964A GB13979/77A GB1397977A GB1592964A GB 1592964 A GB1592964 A GB 1592964A GB 13979/77 A GB13979/77 A GB 13979/77A GB 1397977 A GB1397977 A GB 1397977A GB 1592964 A GB1592964 A GB 1592964A
- Authority
- GB
- United Kingdom
- Prior art keywords
- weight
- cork
- parts
- activated charcoal
- mixture
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
- D06N7/0005—Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface
- D06N7/0039—Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface characterised by the physical or chemical aspects of the layers
- D06N7/0052—Compounding ingredients, e.g. rigid elements
- D06N7/0055—Particulate material such as cork, rubber particles, reclaimed resin particles, magnetic particles, metal particles, glass beads
-
- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/30—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being formed of particles, e.g. chips, granules, powder
-
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0036—Heat treatment
-
- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
-
- 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
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/06—Vegetal particles
-
- 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
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/72—Cured, e.g. vulcanised, cross-linked
-
- 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
- B32B2317/00—Animal or vegetable based
- B32B2317/02—Cork
-
- 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
- B32B2317/00—Animal or vegetable based
- B32B2317/04—Linoleum
-
- 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
- B32B2437/00—Clothing
- B32B2437/02—Gloves, shoes
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Textile Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Description
(54) IMPROVEMENTS IN THE MANUFACTURE OF
INSOLES FOR BOOTS AND SHOES (71) We, LANCASHIRE SOCK MANU- FACTURING COMPANY (formerly LANCASHIRE SOCK MANUFACTURING COMPANY LIMITED, a British Company of Britannia Mill,
Bacup, Lancashire OL13 9RZ, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: The present invention relates to insoles for boots and shoes and to a process for manufacturing them..
Broadly stated, the invention provides an insole for a boot or shoe which is shaped to conform to the outline of a human foot and comprises:
(a) a web of textile material; and
(b) bonded to the textile material a flexible layer containing particulate cork which is either agglomerated cork particles or is a mixture of cork particles and linseed oil, (otherwise known as cork linoleum) said layer having homogeneously dispersed therein 5-50% by weight of finely divided charcoal preferably about 15% by weight. Where the flexible layer is of cork linoleum, a natural or synthetic resin may also be present.
In use the insoles are fitted into the users shoes with the the textile material facing upwardly. The purpose of the textile material is firstly to provide an attractive soft' and warm surface for the wearer and secondly to dimensionally stabilise the cork containing layer and prevent ib from breaking up during wear. It will be appreciated that a wide variety of textile materials could be used. When the cork containing layer is an agglomerated sheet, the textile material may be a stitch bonded non-woven fabric based on viscose fibres, which is preferred, it may be a raised flannelette cloth or it may be a woven cloth of cotton or a synthetic fibre. The textile material will normally be of weight 100-180 gim2, ,usually about 140 g/m2.
When the cork containing-layer is a cork/ linol'eum mixture the textile material will normally be hessian or a woven cloth of cotton or synthetic fibres and when hessian is used there may be an additional layer of non-woven fabric or flannelette bonded to the hessian to provide an attractive and comfortable surface.
The cork incorporated or formed into the cork layer is typically of particle size from 12 to 40 (or even dust) mesh size and density from 3 to 8 Ibs/cu ft. When the cork layer is an agglomerated sheet it may be held together by means of a water-resistant binder, for example an animal derived glue rendered water-resistant by formaldehyde, or by means of a synthetic resin. An agglomerated sheet may -typically comprise 5-20 parts by weight of binder, 3-50 parts by weight of charcoal and 92-30parts by weight of cork granules or powder. The thickness of the sheet may be from 1/32" to 1/8", most usually 1/16".
When the cork layer is a cork linoleum, particles of cork may be mixed with oxidised linseed oil and natural resin and optionally an inert filler, such as powdered calcium carbonate. When no filler is present, the proportions of the ingredients of the linoleum layer may be from 5 to 45 parts by weight of powdered charcoal, 5 to 45 parts by weight of cork, 78 to 40 by weight of resin. When calcium carbonate filler is present in the mixture, the appropriate proportions are 5 to 45 parts by weight of activated charcoal, 5 to 40 parts by weight' of' cork, 5 to 45 parts by weight of filler, 74 to 40 parts by weight of linseed oil and 3 to 10 parts by weight of resin.
The term "charcoal" as used herein is not confined to charcoal obtained by burning of wood, but includes coal derived carbons and similar materials obtained by burning of animal and vegetable materials generally. It 'is preferred to use activated charcoal because of its enhanced capacity to absorb odours. Activated charcoal is made by heating a carbonaceous material (which may be derived from coal, wood,
coconut shells and the like) to a temperature up to 1000 degrees centigrade with
addition of air and steam and gives a non crystalline material which is highly porous and has a large internal surface area. Coconut shell derived activated charcoals which have very small pore radii are preferred.
Tlle material is preferably in the form of a fine powder, typically of such size that 90% passes a 200 British Standard Sieve, although granular activated charcoal can also be used.
In a further aspect the invention provides a process for producing insoles for boots and shoes which comprises admixing granulated cork and activated carbon in a paddle mixer, adding a fixative to the mixture, pouring the mixture into moulds, compressing the mix into blocks and curing the blocks under heat and pressure, removing the cured blocks from the mould, cutting the blocks into thin sheets, bonding a layer of textile material to one face of the sheet and cutting the sheet to form insoles. The blocks of cork used to form the agglomerated sheet type insoles made in the above process are generally cured for about 24 hours at a temperature of at least 100 degrees centigrade and usually 110-180 degrees centigrade under a pressure usually of 1500 to 2000 lbs/sq in.
In a yet further aspect, the invention provides a process for manufacturing cork linoleum insoles containing activated charcoal, which comprises
(a) admixing granulated cork with finely divided activated charcoal, oxidised linseed oil, a natural or synthetic resin and optionally a filler;
(b) depositing the mixture as a thin uniform layer on a web of textile material, typically by means of calendar rolls maintained at a temperature of 90-110 degrees centigrade;
(c) stoving the treated web at an elevated temperature until the linseed oil has oxidised;
(d) optionally bonding a second layer of textile material to the treated and cured web; and
(e) cutting the resulting sheet material to form insoles.
The following Examples illustrate the invention.
EXAMPLE I
Production of an agglomerated cork insole
Four pounds of animal glue were dissolved in four pints of boiling water and were introduced into a paddle mixer together with 28 pounds of granulated cork of particle size 12-18 mesh, 6 fluid ounces of a concentrated aqueous solution of formaldehyde, 1 1/2 pints of glycerin and 4 1/4 pounds of finely ground activated charcoal. Mixing was continued for 8 minutes, after which the activated charcoal had become homogeneously mixed with the cork granules and had become impregnated with glue and formaldehyde solution.
The mixture was then placed into steel moulds and cured for about 24 hours at 150 degrees centigrade under a pressure of about 1800 lbs/sq inch. The resulting block of agglomerated cork was removed from the mould and cut into sheets each of 1/16th inch thickness by means of a band knife. Each sheet was then laminated to a stitch bonded non-woven viscose fabric of weight 140 glm2 using a suitable binder, such as an acrylic or rubber based adhesive. The resulting laminated material was cut to form pairs of insoles each dimensioned to fit inside a man's or woman's or child's shoe of a standard size.
The pairs of insoles were subjected to a wearer trial in which the subjects were asked to comment on the comfort and the odour absorbent properties of the insoles in relation to ordinary cork insoles. The results of the trial indicated that the activated charcoal containing insoles were preferred by the test subjects who found them more absorbent than the standard cork insoles and also effective in reducing foot odour.
EXAMPLE 2
15 pounds of finely ground activated charcoal and 30 lbs of granulated cork were mixed with 55 Ibs of oxidised linseed oil, to which had previously been incorporated 51bs of natural gum resin (i.e. 50 lbs oil and 5 lbs resin).
The above ingredients were mixed for 5 minutes in a batch mixer and then subject to secondary mixing for approx. 1/2 minute duration.
The resulting mixture was calandered onto a raised cotton flannelette of weight 200 g/m2, the calendar rolls being steam heated to a temperature of 90-100 centigrade and at a setting of 1.75 mm so that approximately 1200 g/m2 of the mixture was deposited onto the flannelette.
The coated fabric was stoved at 150-180 Fahrenheit for 1-3 weeks to complete the oxidation and drying of the cork containing mixture.
The resulting charcoal containing cork linoleum was cut to form pairs of insoles each dimensioned to fit inside a man's or woman's or children's shoe of standard size.
EXAMPLE 3
Production of a cork/filler linoleum insole
15 pounds of finely ground activated charcoal and 15 pounds of granulated cork were mixed with 70 pounds of oxidised-linseed oil, to which had previously been incorporated 2 1/2 pounds of natural gum resin and 17 1/2 pounds of whiting (finely divided calcium carbonate).
The above ingredients were mixed for 5 minutes in a batch mixer and then sub jected to secondary mixing cycle through continuous mixing machinery for approx.
1/2 minute duration. The resulting mixture was calendered onto a coarsely woven hessian of approximate weight 225 g/m2. The calendar rolls being steam heated to a temperature of 90-100 degrees centigrade and set 1.75 mm apart so that approximately 1200 g/m2 of the mixture were deposited onto the hessian. The coated hessian was stored at 150-180 degrees Fahrenheit for 1-3 weeks to complete oxidation and drying of the linoleum mixture.
The hessian face of the resulting cork linoleum material was bonded by means of a rubber-based adhesive to a stitch-bonded non-woven viscose fabric of weight 140 g/m2. The resulting material was cut to form insoles each dimensioned to fit inside a pair of shoes of standard size.
WHAT WE CLAIM IS:- 1. An insole for a boot or shoe which is shaped to conform to the outline of a human foot and comprises:
(a) a web of textile material; and
(b) bonded to the textile material a flexible layer containing particulate cork which either consists of agglomerated cork particles or cork linoleum (i.e. a mixture of cork particles with linseed oil and optionally a natural or synthetic resin) said flexible layer having homogeneously dispersed therein 5-50% by weight of finely divided charcoal.
2. An insole according to Claim 1, wherein the flexible layer is an agglomerated sheet consisting of 5 to 20 parts by weight of binder, 3 to 50 parts by weight of charcoal and 92 to 30 parts by weight of cork granules or powder.
3. An insole according to Claim 2, wherein the flexible layer is about 1/16 inch thick.
4. An insole according to Claim 1, wherein the flexible layer contains from 5 to 45 parts by weight of activated charcoal, 5 to 45 parts by weight of cork, 78 to 40 parts by weight of linseed oil and 2 to 10 parts by weight of resin.
5. An insole according to Claim 1, wherein the flexible layer contains 5 to 45 parts by weight of activated charcoal, 5 to 40 parts by weight of cork, 5 to 45 parts by weight of filler, 74 to 40 parts by weight of linseed oil and 1 to 10 parts by weight of resin.
6. An insole according to any preceding claim, wherein the activated charcoal is of coconut shell type and is in the form of a powder, 90% of which passes through a 200 British Standard Sieve.
7. An insole according to any preceding claim, wherein the amount of activated charcoal present in the flexible layer is about 15% by weight.
8. A process for preparing shaped insoles for boots or shoes which comprises admixing granulated cork and activated charcoal in a paddle mixer adding a fixative to the mixture, pouring the mixture into moulds, compressing the mix into blocks and curing the blocks under heat and pressure, removing the cured blocks from the mould, cutting them into thin sheets, bonding a layer of textile material to one face of each sheet and cutting the resultant laminated material to form insoles.
9. A method according to Claim 8, wherein the amount of activated charcoal mixed with the cork is about 15% by weight.
10. A method according to' Claim 8 or 9, wherein the mixture of cork, activated charcoal and binder is cured in the mould at a temperature of 110 to 180 degrees centigrade and a pressure of 1500 to 2000
Ibs/sq in. for a period of about 24 hours.
11. A method for making insoles containing granulated cork and finely divided activated charcoal substantially as described in Example 1.
12. A method for manufacturing cork linoleum insoles containing activated charcoal, which comprises:
(a) admixing granulated cork with finely divided activated charcoal, oxidised linseed oil, and a natural or synthetic resin;
(b) depositing the mixture as a thin uniform layer on a dimensionally stable web of textile material;
(c) stoving the treated web at an elevated temperature until the linseed oil has cured; and
(d) cutting the resulting sheet material to form insoles.
13. A method according to Claim 12, wherein the mixture is deposited onto the textile material by means of calendar rolls maintained at a temperature of 90-110 degrees centigrade.
14. A method according to Claim 12 or Claim 13, wherein the treated textile material is stored at a temperature of 150
180 degrees Fahrenheit' for a period of at least one week.
15. A method according to Claims 12,
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (17)
1/2 minute duration. The resulting mixture was calendered onto a coarsely woven hessian of approximate weight 225 g/m2. The calendar rolls being steam heated to a temperature of 90-100 degrees centigrade and set 1.75 mm apart so that approximately 1200 g/m2 of the mixture were deposited onto the hessian. The coated hessian was stored at 150-180 degrees Fahrenheit for 1-3 weeks to complete oxidation and drying of the linoleum mixture.
The hessian face of the resulting cork linoleum material was bonded by means of a rubber-based adhesive to a stitch-bonded non-woven viscose fabric of weight 140 g/m2. The resulting material was cut to form insoles each dimensioned to fit inside a pair of shoes of standard size.
WHAT WE CLAIM IS:- 1. An insole for a boot or shoe which is shaped to conform to the outline of a human foot and comprises:
(a) a web of textile material; and
(b) bonded to the textile material a flexible layer containing particulate cork which either consists of agglomerated cork particles or cork linoleum (i.e. a mixture of cork particles with linseed oil and optionally a natural or synthetic resin) said flexible layer having homogeneously dispersed therein 5-50% by weight of finely divided charcoal.
2. An insole according to Claim 1, wherein the flexible layer is an agglomerated sheet consisting of 5 to 20 parts by weight of binder, 3 to 50 parts by weight of charcoal and 92 to 30 parts by weight of cork granules or powder.
3. An insole according to Claim 2, wherein the flexible layer is about 1/16 inch thick.
4. An insole according to Claim 1, wherein the flexible layer contains from 5 to 45 parts by weight of activated charcoal, 5 to 45 parts by weight of cork, 78 to 40 parts by weight of linseed oil and 2 to 10 parts by weight of resin.
5. An insole according to Claim 1, wherein the flexible layer contains 5 to 45 parts by weight of activated charcoal, 5 to 40 parts by weight of cork, 5 to 45 parts by weight of filler, 74 to 40 parts by weight of linseed oil and 1 to 10 parts by weight of resin.
6. An insole according to any preceding claim, wherein the activated charcoal is of coconut shell type and is in the form of a powder, 90% of which passes through a 200 British Standard Sieve.
7. An insole according to any preceding claim, wherein the amount of activated charcoal present in the flexible layer is about 15% by weight.
8. A process for preparing shaped insoles for boots or shoes which comprises admixing granulated cork and activated charcoal in a paddle mixer adding a fixative to the mixture, pouring the mixture into moulds, compressing the mix into blocks and curing the blocks under heat and pressure, removing the cured blocks from the mould, cutting them into thin sheets, bonding a layer of textile material to one face of each sheet and cutting the resultant laminated material to form insoles.
9. A method according to Claim 8, wherein the amount of activated charcoal mixed with the cork is about 15% by weight.
10. A method according to' Claim 8 or 9, wherein the mixture of cork, activated charcoal and binder is cured in the mould at a temperature of 110 to 180 degrees centigrade and a pressure of 1500 to 2000
Ibs/sq in. for a period of about 24 hours.
11. A method for making insoles containing granulated cork and finely divided activated charcoal substantially as described in Example 1.
12. A method for manufacturing cork linoleum insoles containing activated charcoal, which comprises:
(a) admixing granulated cork with finely divided activated charcoal, oxidised linseed oil, and a natural or synthetic resin;
(b) depositing the mixture as a thin uniform layer on a dimensionally stable web of textile material;
(c) stoving the treated web at an elevated temperature until the linseed oil has cured; and
(d) cutting the resulting sheet material to form insoles.
13. A method according to Claim 12, wherein the mixture is deposited onto the textile material by means of calendar rolls maintained at a temperature of 90-110 degrees centigrade.
14. A method according to Claim 12 or Claim 13, wherein the treated textile material is stored at a temperature of 150
180 degrees Fahrenheit' for a period of at least one week.
15. A method according to Claims 12,
13 or 14, wherein the cork particles are additionally mixed with finely divided calcium carbonate as filler.
16. A method according to any of
Claims 12 to 15, comprising the additional
step of bonding a second layer of textile
material to the treated and cured web.
17. A method for making insoles containing granulated cork and finely divided activated charcoal substantially as described in Example 2 or 3.
v . r . r
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB13979/77A GB1592964A (en) | 1978-02-24 | 1978-02-24 | Manufacture of insoles for boots and shoes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB13979/77A GB1592964A (en) | 1978-02-24 | 1978-02-24 | Manufacture of insoles for boots and shoes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1592964A true GB1592964A (en) | 1981-07-15 |
Family
ID=10032839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13979/77A Expired GB1592964A (en) | 1978-02-24 | 1978-02-24 | Manufacture of insoles for boots and shoes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1592964A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2165799A (en) * | 1984-10-24 | 1986-04-23 | Stephen Anthony Rawlings | Pad for absorption of body odour |
| EP0179650A2 (en) * | 1984-10-24 | 1986-04-30 | Stephen Anthony RAWLINGS | Pad for absorbtion of body odour |
| WO1994015013A1 (en) * | 1992-12-27 | 1994-07-07 | Tesch Guenter | Wear-resistant, fibre-reinforced floor covering, process for producing it and its use |
| GB2314790A (en) * | 1996-07-01 | 1998-01-14 | William Graham Lamyman | Moisture absorbent covering means |
| WO2022117241A1 (en) * | 2020-12-03 | 2022-06-09 | Dsigntank, Sl | Cork derived product |
-
1978
- 1978-02-24 GB GB13979/77A patent/GB1592964A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2165799A (en) * | 1984-10-24 | 1986-04-23 | Stephen Anthony Rawlings | Pad for absorption of body odour |
| EP0179650A2 (en) * | 1984-10-24 | 1986-04-30 | Stephen Anthony RAWLINGS | Pad for absorbtion of body odour |
| EP0179650A3 (en) * | 1984-10-24 | 1988-01-07 | Stephen Anthony RAWLINGS | Pad for absorbtion of body odour |
| WO1994015013A1 (en) * | 1992-12-27 | 1994-07-07 | Tesch Guenter | Wear-resistant, fibre-reinforced floor covering, process for producing it and its use |
| GB2314790A (en) * | 1996-07-01 | 1998-01-14 | William Graham Lamyman | Moisture absorbent covering means |
| WO2022117241A1 (en) * | 2020-12-03 | 2022-06-09 | Dsigntank, Sl | Cork derived product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |