Patents by Inventor Mara Piano

Mara Piano has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for manufacturing a monolithic printhead with truncated cone shape nozzles
    Patent number: 7533463
    Abstract: A process for manufacturing a monolithic thermal ink jet printhead (40) comprising a plurality of chambers (74) and of nozzles (56), comprises steps of (206) depositing a plurality of sacrificial layers (31), of obtaining, by means of exposure and development operations, a plurality of casts (156), of (215) applying a structural layer (107), and subsequently steps of (225) removing the casts (156) and of (226) removing the sacrificial layers (31), in order to produce a plurality of chambers (74) and nozzles (56).
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: May 19, 2009
    Assignee: Telecom Italia S.p.A.
    Inventors: Renato Conta, Mara Piano
  • Monolithic printhead with built-in equipotential network and associated manufacturing method
    Patent number: 7279111
    Abstract: An actuating assembly (50) for ink jet printheads consists of a silicon die (61), which comprises a groove (45) and a lamina (64), and of a structure (75) produced monolithically in the same production process. The actuating assembly (50) comprises a microhydraulics (63), the latter in turn comprising a plurality of channels (67) and chambers (57), made inside the structure (75) by means of a sacrificial metallic layer (54). A conducting layer (26) forms a single interconnected equipotential network used as the electrode during the processes of electrochemical etch stopping on the groove (45), of electrodeposition of the sacrificial layer (54) and of the latter's subsequent removal.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: October 9, 2007
    Assignee: Telecom Italia S.p.A.
    Inventors: Renato Conta, Mara Piano
  • Monolithic printhead with built-in equipotential network and associated manufacturing method
    Patent number: 7070261
    Abstract: An actuating assembly (50) for ink jet printheads consists of a silicon die (61), which comprises a groove (45) and a lamina (64), and of a structure (75) produced monolithically in the same production process. The actuating assembly (50) comprises a microhydraulics (63), the latter in turn comprising a plurality of channels (67) and chambers (57), made inside the structure (75) by means of a sacrificial metallic layer (54). A conducting layer (26) forms a single interconnected equipotential network used as the electrode during the processes of electrochemical etch stopping on the groove (45), of electrodeposition of the sacrificial layer (54) and of the latter's subsequent removal.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: July 4, 2006
    Assignee: Olivetti Tecnost S.p.A.
    Inventors: Renato Conta, Mara Piano
  • Process for manufacturing a monolithic printhead with truncated cone shape nozzles
    Patent number: 6949201
    Abstract: A process for manufacturing a monolithic thermal ink jet printhead (40) comprising a plurality of chambers (74) and of nozzles (56), comprises steps of (206) depositing a plurality of sacrificial layers (31), of obtaining, by means of exposure and development operations, a plurality of casts (156), of (215) applying a structural layer (107), and subsequently steps of (225) removing the casts (156) and of (226) removing the sacrificial layers (31), in order to produce a plurality of chambers (74) and nozzles (56).
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: September 27, 2005
    Assignee: Olivetti Tecnost S.p.A.
    Inventors: Renato Conta, Mara Piano
  • Process for manufacturing a monolithic printhead with truncated cone shape nozzles
    Publication number: 20050150107
    Abstract: A process for manufacturing a monolithic thermal ink jet printhead (40) comprising a plurality of chambers (74) and of nozzles (56), comprises steps of (206) depositing a plurality of sacrificial layers (31), of obtaining, by means of exposure and development operations, a plurality of casts (156), of (215) applying a structural layer (107), and subsequently steps of (225) removing the casts (156) and of (226) removing the sacrificial layers (31), in order to produce a plurality of chambers (74) and nozzles (56).
    Type: Application
    Filed: February 22, 2005
    Publication date: July 14, 2005
    Applicant: Olivetti Tecnost S.p.A.
    Inventors: Renato Conta, Mara Piano
  • Monolithic printhead with built-in equipotential network and associated manufacturing method
    Publication number: 20040207694
    Abstract: An actuating assembly (50) for ink jet printheads consists of a silicon die (61), which comprises a groove (45) and a lamina (64), and of a structure (75) produced monolithically in the same production process. The actuating assembly (50) comprises a microhydraulics (63), the latter in turn comprising a plurality of channels (67) and chambers (57), made inside the structure (75) by means of a sacrificial metallic layer (54). A conducting layer (26) forms a single interconnected equipotential network used as the electrode during the processes of electrochemical etch stopping on the groove (45), of electrodeposition of the sacrificial layer (54) and of the latter's subsequent removal.
    Type: Application
    Filed: May 14, 2004
    Publication date: October 21, 2004
    Applicant: OLIVETTI TECNOST S.p.A.
    Inventors: Renato Conta, Mara Piano
  • Process for manufacturing a monolithic printhead with truncated cone shape nozzles
    Publication number: 20030107618
    Abstract: A process for manufacturing a monolithic thermal ink jet printhead (40) comprising a plurality of chambers (74) and of nozzles (56), comprises steps of (206) depositing a plurality of sacrificial layers (31), of obtaining, by means of exposure and development operations, a plurality of casts (156), of (215) applying a structural layer (107), and subsequently steps of (225) removing the casts (156) and of (226) removing the sacrificial layers (31), in order to produce a plurality of chambers (74) and nozzles (56).
    Type: Application
    Filed: December 4, 2002
    Publication date: June 12, 2003
    Inventors: Renato Conta, Mara Piano