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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI8007955

Type

Invention Patent

Filing

12/04/1980

Publication

-

Progress at the INPI

  1. Filing12/04/80
  2. Publication
  3. Examination08/09/83
  4. Allowance03/31/87
  5. Grant10/27/87
  6. Expired03/19/96

The letters patent expired on 03/19/1996: 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

Oxytech Systems, Inc.

US

See this company's full portfolio

Inventors

P. D. (pessoa física)

S. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

12/29/1987

RPI 897

Concessão da patente

#16.1

10/27/1987

RPI 888

Notificação para pagamento de retribuição

#13.1

08/11/1987

RPI 877

Deferimento

#9.1

03/31/1987

RPI 858

Exigência - art. 36 da LPI

#6.1

05/13/1986

RPI 812

Exigência - art. 36 da LPI

#6.1

07/02/1985

RPI 767

Exigência - art. 36 da LPI

#6.1

01/31/1984

RPI 693

14.4

09/27/1983

RPI 675

Solicitação de exame técnico

#4.1

08/09/1983

RPI 668

Carta-patente expirada

#21.1

03/19/1996

RPI 1320

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