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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8302305

Type

Invention Patent

Filing

05/04/1983

Publication

12/11/1984

Progress at the INPI

  1. Filing05/04/83
  2. Publication12/11/84
  3. Examination01/06/87
  4. Allowance08/11/87
  5. Grant12/29/87
  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: 12/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

I. C. (pessoa física)

US

Inventors

W. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/29/1987

RPI 897

Deferimento

#9.1

08/11/1987

RPI 877

Solicitação de exame técnico

#4.1

01/06/1987

RPI 846

Publicação do pedido de patente

#3.1

12/11/1984

RPI 738

Pedido de patente depositado

#2.1

06/21/1983

RPI 661

Republicação - classificação IPC

#15.11

12/22/2009

RPI 2033

Carta-patente expirada

#21.1

Patente extinta em 04/05/98

07/01/2008

RPI 1956

Pedido de licença compulsória

#20.1

10/04/1994

RPI 1244

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