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Official data from INPI

RECIPIENTE DE CONSTRUÇÃO MULTÍPLICE E PROCESSO PARA FABRICAR O MESMO

Em AnáliseInvention Patent

Application data

Number

PI8306147

Type

Invention Patent

Filing

11/08/1983

Publication

06/12/1984

Progress at the INPI

  1. Filing11/08/83
  2. Publication06/12/84
  3. Examination12/18/84
  4. Allowance04/16/91
  5. Grant11/26/91
  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: 12/18/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Chichibu Cement Co., Ltd.

JP

Ozawa Concrete Industry Co., Ltd.

JP

Inventors

K. I. (pessoa física)

JP

O. S. (pessoa física)

JP

S. O. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

195758/1982 · 11/08/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

12/18/1984

RPI 739

Publicação do pedido de patente

#3.1

06/12/1984

RPI 712

Pedido de patente depositado

#2.1

01/24/1984

RPI 692

Carta-patente expirada

#21.1

Patente extinta em 08/11/98

07/01/2008

RPI 1956

Concessão da patente

#16.1

11/26/1991

RPI 1095

Notificação para pagamento de retribuição

#13.1

07/30/1991

RPI 1078

Deferimento

#9.1

04/16/1991

RPI 1063

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