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Official data from INPI

VÁLVULA DE REVERSÃO ELETRO-PNEUMÁTICA

ConcedidaInvention Patent

Application data

Number

PI8200118

Type

Invention Patent

Filing

01/11/1982

Publication

09/13/1983

Progress at the INPI

  1. Filing01/11/82
  2. Publication09/13/83
  3. Examination09/04/84
  4. Allowance10/22/85
  5. Grant06/24/86
  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: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Controles Robertshaw do Brasil S/A

RS, BR

Inventors

W. B. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/24/1986

RPI 818

Deferimento

#9.1

10/22/1985

RPI 783

Exigência - art. 36 da LPI

#6.1

02/26/1985

RPI 749

Solicitação de exame técnico

#4.1

09/04/1984

RPI 724

Publicação do pedido de patente

#3.1

09/13/1983

RPI 673

Pedido de patente depositado

#2.1

03/02/1982

RPI 593

Carta-patente expirada

#21.1

Patente extinta em 11/01/97

07/01/2008

RPI 1956

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