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Official data from INPI

SISTEMA DE PERCEPÇÃO DE CARGA HIDROSTÁTICA E VÁLVULA DE PRIORIDADE.

ConcedidaInvention Patent

Application data

Number

PI8300849

Type

Invention Patent

Filing

02/22/1983

Publication

04/17/1984

Progress at the INPI

  1. Filing02/22/83
  2. Publication04/17/84
  3. Examination08/21/84
  4. Allowance06/18/85
  5. Grant12/31/85
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 12/31/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TRW Inc

US

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Inventors

R. L. (pessoa física)

Technical data

IPC Classification

Priority claims

US

371.260 · 04/23/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

10/01/1985

RPI 780

Deferimento

#9.1

06/18/1985

RPI 765

Solicitação de exame técnico

#4.1

08/21/1984

RPI 722

Publicação do pedido de patente

#3.1

04/17/1984

RPI 704

Pedido de patente depositado

#2.1

04/05/1983

RPI 650

Carta-patente expirada

#21.1

Patente extinta em 22/02/98

07/01/2008

RPI 1956

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