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Official data from INPI

SEM TITULO

ConcedidaInvention Patent
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Application data

Number

PI8006630

Type

Invention Patent

Filing

10/15/1980

Publication

06/29/1982
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Progress at the INPI

  1. Filing10/15/80
  2. Publication06/29/82
  3. Examination08/30/83
  4. Allowance10/16/84
  5. Grant06/25/85
  6. Expired11/14/95

The letters patent expired on 11/14/1995: 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: 06/25/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Usina Central do Parana S/A Agricultura Indústria e comércio

PR, BR

Inventors

C. W. (pessoa física)

Technical data

IPC Classification

F02M 43/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/25/1985

RPI 766

Notificação para pagamento de retribuição

#13.1

03/05/1985

RPI 750

Deferimento

#9.1

10/16/1984

RPI 730

Exigência - art. 36 da LPI

#6.1

03/07/1984

RPI 698

Solicitação de exame técnico

#4.1

08/30/1983

RPI 671

Solicitação de exame não realizada

#4.2

04/19/1983

RPI 652

Publicação do pedido de patente

#3.1

06/29/1982

RPI 610

Carta-patente expirada

#21.1

11/14/1995

RPI 1302

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