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Official data from INPI

VEDAÇÃO PARA VÁLVULAS DE ESFERA BI-PARTIDAS

Arquivada/ExtintaInvention Patent

Application data

Number

PI9100234

Type

Invention Patent

Filing

01/21/1991

Publication

05/21/1991

Progress at the INPI

  1. Filing01/21/91
  2. Publication05/21/91
  3. Examination07/02/91
  4. Allowance10/11/94
  5. Grant06/27/95
  6. Expired06/22/10

The letters patent expired on 06/22/2010: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/22/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. S. (pessoa física)

CH

Inventors

W. S. (pessoa física)

CH

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 21/01/2006

06/22/2010

RPI 2059

Concessão da patente

#16.1

06/27/1995

RPI 1282

Notificação para pagamento de retribuição

#13.1

02/21/1995

RPI 1264

Deferimento

#9.1

10/11/1994

RPI 1245

Solicitação de exame técnico

#4.1

07/02/1991

RPI 1074

Publicação antecipada

#3.2

05/21/1991

RPI 1068

Pedido de patente depositado

#2.1

05/14/1991

RPI 1067

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