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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8104934

Type

Invention Patent

Filing

07/30/1981

Publication

04/20/1982

Progress at the INPI

  1. Filing07/30/81
  2. Publication04/20/82
  3. Examination06/26/84
  4. Allowance01/15/85
  5. Grant07/30/85
  6. Expired11/19/96

The letters patent expired on 11/19/1996: 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: 07/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Norton Company.

US

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Inventors

Y. W. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/30/1985

RPI 771

Notificação para pagamento de retribuição

#13.1

05/07/1985

RPI 759

Deferimento

#9.1

01/15/1985

RPI 743

Solicitação de exame técnico

#4.1

06/26/1984

RPI 714

Publicação do pedido de patente

#3.1

04/20/1982

RPI 600

Carta-patente expirada

#21.1

11/19/1996

RPI 1355

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