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Official data from INPI

VÁLVULA DE CUNHA DE DISCO DUPLO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9101398

Type

Invention Patent

Filing

04/08/1991

Publication

11/26/1991

Progress at the INPI

  1. Filing04/08/91
  2. Publication11/26/91
  3. Examination06/30/92
  4. Allowance07/26/94
  5. Grant04/25/95
  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

Zimmermann & Jansen GmbH

DE

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Inventors

G. N. (pessoa física)

DE

H. G. (pessoa física)

DE

N. M. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 40 11 274.8 · 04/06/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 08/04/2006

06/22/2010

RPI 2059

Concessão da patente

#16.1

04/25/1995

RPI 1273

Notificação para pagamento de retribuição

#13.1

11/22/1994

RPI 1251

Deferimento

#9.1

07/26/1994

RPI 1234

Solicitação de exame técnico

#4.1

06/30/1992

RPI 1126

Publicação do pedido de patente

#3.1

11/26/1991

RPI 1095

Pedido de patente depositado

#2.1

09/24/1991

RPI 1086

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