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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI8204743

Type

Invention Patent

Filing

08/11/1982

Publication

03/20/1984

Progress at the INPI

  1. Filing08/11/82
  2. Publication03/20/84
  3. Examination06/12/84
  4. Allowance04/16/85
  5. Grant10/01/85
  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: 02/23/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. W. (pessoa física)

SP, BR

Inventors

H. W. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

02/23/1988

RPI 905

Concessão da patente

#16.1

10/01/1985

RPI 780

Deferimento

#9.1

04/16/1985

RPI 756

Solicitação de exame técnico

#4.1

06/12/1984

RPI 712

Publicação do pedido de patente

#3.1

03/20/1984

RPI 700

Pedido de patente depositado

#2.1

09/28/1982

RPI 623

Carta-patente expirada

#21.1

Patente extinta em 11/08/97

07/01/2008

RPI 1956

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