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John Alfred Fifield Patents |
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Inventor: Fifield; John Alfred
Address: Aylesbury, GB
No. of patents: 5
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| D435121 |
Roof tile |
December 12, 2000 |
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| D426317 |
Paving stone |
June 6, 2000 |
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| D423114 |
Paving stone |
April 18, 2000 |
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| 6899839 |
Building products |
May 31, 2005 |
| A method of manufacturing a building product from a mix (6) including particulate material and a thermoplastic binder which comprises heating the mix at least to a temperature at which the thermoplastic binder in the mix liquefies, subjecting the heated thermoplastic mix to a pressing |
| 5743059 |
Roof tile |
April 28, 1998 |
| An extruded roof tile (30) has an upper surface (11), which is contoured to give the appearance of a profiled tile and which is, for example, provided by projections (32, 34) extending between the upper and lower edges (13) and (14a) respectively of the tile, and an under surface (12) ha |
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