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Official data from INPI

DISPOSITIVO GIRATÓRIO DE PRESSÃO DE FLUÍDO.

PublicadaInvention Patent

Application data

Number

PI8702427

Type

Invention Patent

Filing

04/30/1987

Publication

02/17/1988

Progress at the INPI

  1. Filing04/30/87
  2. Publication02/17/88
  3. Examination11/20/90
  4. Allowance07/09/91
  5. Grant05/26/92
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 02/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. C. (pessoa física)

US

See this company's full portfolio

Inventors

M. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

858,151 · 05/01/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

02/17/1988

RPI 904

Pedido de patente depositado

#2.1

08/04/1987

RPI 876

Carta-patente expirada

#21.1

Patente extinta em 30/04/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

05/26/1992

RPI 1121

Notificação para pagamento de retribuição

#13.1

11/05/1991

RPI 1092

Deferimento

#9.1

07/09/1991

RPI 1075

Solicitação de exame técnico

#4.1

11/20/1990

RPI 1042

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