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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8400475

Type

Invention Patent

Filing

02/03/1984

Publication

09/11/1984

Progress at the INPI

  1. Filing02/03/84
  2. Publication09/11/84
  3. Examination06/04/85
  4. Allowance09/02/86
  5. Grant06/02/87
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 06/02/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Keystone International, Inc.

US

See this company's full portfolio

Inventors

S. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/02/1987

RPI 867

Notificação para pagamento de retribuição

#13.1

12/23/1986

RPI 844

Deferimento

#9.1

09/02/1986

RPI 828

Pedido de certificado de adição de invenção

#5.1

11/12/1985

RPI 786

Solicitação de exame técnico

#4.1

06/04/1985

RPI 763

Publicação do pedido de patente

#3.1

09/11/1984

RPI 725

Pedido de patente depositado

#2.1

04/17/1984

RPI 704

Carta-patente expirada

#21.1

Patente extinta em 03/02/99

07/08/2008

RPI 1957

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