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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8102099

Type

Invention Patent

Filing

04/07/1981

Publication

08/17/1982

Progress at the INPI

  1. Filing04/07/81
  2. Publication08/17/82
  3. Examination12/14/82
  4. Allowance03/20/84
  5. Grant10/30/84
  6. Expired10/01/96

The letters patent expired on 10/01/1996: 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: 10/30/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. I. (pessoa física)

US

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Inventors

M. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/30/1984

RPI 732

Notificação para pagamento de retribuição

#13.1

07/17/1984

RPI 717

Deferimento

#9.1

03/20/1984

RPI 700

Republicação - classificação IPC

#15.11

02/14/1984

RPI 695

8.1

01/24/1984

RPI 692

Solicitação de exame técnico

#4.1

12/14/1982

RPI 634

Publicação do pedido de patente

#3.1

08/17/1982

RPI 617

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

20.7

03/26/1991

RPI 1060

20.4

10/16/1990

RPI 1037

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