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Official data from INPI

SEM TITULO

ConcedidaInvention Patent
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Application data

Number

PI8401950

Type

Invention Patent

Filing

04/26/1984

Publication

12/03/1985
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Progress at the INPI

  1. Filing04/26/84
  2. Publication12/03/85
  3. Examination05/27/86
  4. Allowance08/02/88
  5. Grant07/25/89
  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.

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Latest action published by the INPI: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shonetsugaku Kenkyusho Co. Ltda

JP

Inventors

U. S. (pessoa física)

Technical data

IPC Classification

F26B 7/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/25/1989

RPI 979

Notificação para pagamento de retribuição

#13.1

11/29/1988

RPI 945

Deferimento

#9.1

08/02/1988

RPI 928

Exigência - art. 36 da LPI

#6.1

01/27/1987

RPI 849

Solicitação de exame técnico

#4.1

05/27/1986

RPI 814

Publicação do pedido de patente

#3.1

12/03/1985

RPI 789

Pedido de patente depositado

#2.1

07/03/1984

RPI 715

Carta-patente expirada

#21.1

Patente extinta em 26/04/99

07/08/2008

RPI 1957

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