Patents
Sitemap › B21 - Mechanical metal-working without essentially removing material; Punching metal › B21L - Making chains › B21L 11 - Making chains or chain links of special shape
Patents for B21L 11 - Making chains or chain links of special shape (298)
12/2003
12/04/2003US20030221408 Lightweight omega chain and improved method of manufacture
11/2003
11/20/2003US20030213225 Feeding assembly for machines treating multicolor wire-like elements and product obtained by said machines
11/11/2003US6644008 Cross-sectional shapes for hollow link chain
10/2003
10/15/2003CN2579210Y Forming machine for chain loop
10/08/2003EP1349466A1 A method of decorating items of jewellery
09/2003
09/16/2003US6619024 Jewelry link forming apparatus
08/2003
08/14/2003US20030150203 Jewelry rope chain
08/14/2003US20030150202 Method of decorating items of jewellery
06/2003
06/19/2003US20030110756 Method of forming chain links
05/2003
05/13/2003US6560955 Jewelry rope chain link element
04/2003
04/29/2003US6553751 Exterior shaped link and method
04/24/2003US20030074918 Method of making jewellery goods and wearable multicolor ornamental articles manufactured with such products
04/24/2003US20030074881 Jewelry rope chain link element
04/24/2003US20030074880 Ornamental jewelry rope chain link element
04/23/2003EP1304053A2 Method of making jewellery goods and wearable multicolor ornamental articles manufactured with such products
03/2003
03/18/2003US6532725 Ornamental jewelry rope chain link element
02/2003
02/13/2003US20030029156 Cross-sectional shapes for hollow link chain
02/04/2003US6513346 Method of forming a piece of flexible linear jewelry, and jewelry produced thereby
02/04/2003US6513316 Method and apparatus for faceting hollow and solid chains
01/2003
01/21/2003US6508001 Method and apparatus for forming a wire
12/2002
12/26/2002US20020194868 Procedure for producing an ornamental chain
12/19/2002US20020189283 Jewelry closed-link element, assembled chain, and method of manufacture
11/2002
11/26/2002US6484488 Method of forming chain links
11/19/2002US6481196 Length of jewelry rope chain exhibiting distinctive visual properties, and related method of manufacture
11/13/2002EP1085829B1 Method of forming a piece of flexible linear jewelry, and jewelry produced thereby
10/2002
10/29/2002US6470665 Procedure to obtain the diamond effect in a precious metal product, particularly as in a chain with hollow links and a chain obtained according to said method
10/29/2002US6470571 Method for producing a decorated adjuster for a necklace or choker
10/08/2002US6460323 Cross-sectional shapes for hollow link chain
08/2002
08/08/2002US20020104307 Method of forming chain links
08/08/2002US20020104306 Exterior shaped link and method
07/2002
07/25/2002US20020095930 Method of forming chain links
07/18/2002WO2002054901A1 A method of decorating items of jewellery
07/17/2002EP1222977A2 Method for the manufacture of ornamental chains
06/2002
06/13/2002WO2002046643A1 Link connector
05/2002
05/21/2002US6389790 Chain link, a jewelry chain and a method of forming the same by contouring
05/16/2002US20020056267 Method of forming chain links
04/2002
04/16/2002US6370860 Hollow wire for faceted jewelry
04/11/2002US20020040572 Method and apparatus for forming a wire
03/2002
03/28/2002US20020035828 Jewelry rope chain link element and methods of manufacture
01/2002
01/15/2002US6338238 Coil link chain and method
12/2001
12/20/2001US20010052227 Procedure to obtain the diamond effect in a precious metal product, particularly as in a chain with hollow links and a chain obtained according to said method
11/2001
11/15/2001US20010039792 Thin walled attached silver filled gold jewelry
11/06/2001US6311470 Reinforced serpentine rope chain
07/2001
07/24/2001US6263658 Oval faceted jewelry rope chain
05/2001
05/29/2001US6237318 U-shaped tubular metal for rope chains
05/15/2001US6230961 Plate link for attaching a clasp link to an ornamental chain and a method of attaching the end of a chain to a clasp link
05/01/2001US6223516 Faceting hollow link chain with finger
04/2001
04/03/2001US6209306 Decorative jewelry rope chain
03/2001
03/28/2001EP1085829A1 Method of forming a piece of flexible linear jewelry, and jewelry produced thereby
02/2001
02/14/2001CN2418981Y Annular parts for steel chains
12/2000
12/12/2000US6158206 Modified gap for jewelry rope chain link
11/2000
11/07/2000US6141861 Apparatus and method for control of roller chain assembly
10/2000
10/12/2000WO2000059328A2 Jewelry chain
08/2000
08/22/2000US6105358 Rope chain
08/22/2000US6105357 Method and apparatus for making hollow seamless links for use in jewelry
03/2000
03/22/2000EP0987072A2 Traction device for use in the manufacturing process of ornamental chains
02/2000
02/29/2000US6029342 Apparatus kit and method for roller chain assembly
01/2000
01/05/2000CN1047968C Stud link chain and its mfg. method and device
12/1999
12/16/1999WO1999063853A1 Method of forming a piece of flexible linear jewelry, and jewelry produced thereby
11/1999
11/17/1999EP0796159B1 Chain link and a method for the manufacture thereof
10/1999
10/19/1999US5966922 Process of manufacturing diamond cut hollow rope chain jewelry
08/1999
08/12/1999DE19811996C1 Method of weldless production of chains
06/1999
06/15/1999US5911677 Rope chain jewelery and method for cutting thereof
03/1999
03/17/1999CN1210773A Apparatus, kit and method for roller chain assembly
03/17/1999CN1210768A Apparatus and method for control of roller chain assembly
03/10/1999EP0900625A1 Apparatus and method for control of roller chain assembly
03/10/1999EP0900624A1 Apparatus, kit and method for roller chain assembly
01/1999
01/27/1999EP0774086B1 Chain link, connecting part for chain links and method for the production thereof
09/1998
09/01/1998US5799480 Ornamental chain
08/1998
08/25/1998US5797258 Method of manufacturing hollow diamond cut chain with multi-faceted surface
07/1998
07/14/1998US5778655 Chain link and a method for the manufacture thereof
05/1998
05/26/1998US5755088 Method of forming a decorative chain in ductile metal with approximately square or similar cross section, and chain made in this way
04/1998
04/14/1998US5737910 Diamond cut hollow jewelry chain
02/1998
02/11/1998CN1173150A Chain link and method for manufacture thereof
12/1997
12/16/1997CA2123575C Hollow diamond cut rope chain and method of making same
12/03/1997EP0809954A1 Method of manufacturing unique jewelry and article formed therefrom
11/1997
11/04/1997US5682736 Jewelry
10/1997
10/30/1997DE19715707A1 Vehicle wheel chain of interconnected links
09/1997
09/24/1997EP0796159A1 Chain link and a method for the manufacture thereof
08/1997
08/26/1997US5660036 Jewelry rope chain
08/12/1997US5655300 Method of making stampato jewelry
08/05/1997US5653100 Method of manufacturing facetted-hollow link chain and chain formed thereby
07/1997
07/30/1997CN1155456A Correction of hinge cylinder size
06/1997
06/10/1997US5636506 Chain link
05/1997
05/21/1997EP0774086A1 Chain link, connecting part for chain links and method for the production thereof
05/06/1997US5626012 Method of making a decorative chain for a necklace or the like from metals having differing characteristics and resulting chain
03/1997
03/18/1997US5611144 Method of manufacturing unique jewelry and article formed therefrom
02/1997
02/25/1997US5605038 Diamond cut hollow jewelry chain
12/1996
12/10/1996US5581993 Hollow diamond cut rope chain with multi-faceted surfaces
12/10/1996US5581992 Method and apparatus for imparting reflective surfaces to items of jewelry
10/1996
10/09/1996EP0736348A1 Method for manufacturing a studded chain link, apparatus for carrying out this method and studded chain link produced by this method
08/1996
08/13/1996US5544477 Method of producing chain links for fine jewelry rope chains
08/06/1996US5542245 Compressed jewelry chain and method of making same
08/06/1996US5542244 Method of making a rope chain with a jewelry component
07/1996
07/23/1996US5537812 Fine jewelry diamond cut chain and method of manufacture thereof
07/16/1996US5535583 Method of faceting a hollow rope chain
07/02/1996US5531065 Fine jewelry diamond cut rope chain and method of manufacture thereof
06/1996
06/18/1996US5526639 Method of forming jewelry chains
06/06/1996WO1996016756A1 Chain link and a method for the manufacture thereof
06/06/1996CA2207188A1 Chain link and a method for the manufacture thereof
1 2 3