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Official data from INPI

ANEL DE SEDE E CONJUNTO DE VÁLVULA GIRATÓRIA

ConcedidaInvention Patent

Application data

Number

PI8203243

Type

Invention Patent

Filing

06/03/1982

Publication

12/20/1983

Progress at the INPI

  1. Filing06/03/82
  2. Publication12/20/83
  3. Examination03/04/86
  4. Allowance07/14/87
  5. Grant01/26/88
  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: 01/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Keystone International, Inc.

US

See this company's full portfolio

Inventors

E. H. (pessoa física)

US

W. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

344.502 · 02/01/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/26/1988

RPI 901

Notificação para pagamento de retribuição

#13.1

11/10/1987

RPI 890

Deferimento

#9.1

07/14/1987

RPI 873

Exigência - art. 36 da LPI

#6.1

10/07/1986

RPI 833

Solicitação de exame técnico

#4.1

03/04/1986

RPI 802

Publicação do pedido de patente

#3.1

12/20/1983

RPI 687

Pedido de patente depositado

#2.1

07/27/1982

RPI 614

Carta-patente expirada

#21.1

Patente extinta em 03/06/97

07/01/2008

RPI 1956

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