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Official data from INPI

SUPORTE DE REGISTRO E PROCESSO PARA REGISTRAR INFORMAÇÕES EM UM SUPORTE DE REGISTRO EM FORMA DE FILME DELGADO

ConcedidaInvention Patent

Application data

Number

PI8200752

Type

Invention Patent

Filing

02/12/1982

Publication

12/21/1982

Progress at the INPI

  1. Filing02/12/82
  2. Publication12/21/82
  3. Examination04/05/83
  4. Allowance12/17/85
  5. Grant06/24/86
  6. Terminated10/29/96

The patent was granted on 06/24/1986 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Minnesota Mining and Manufacturing Company

US

See this company's full portfolio

Inventors

K. M. (pessoa física)

US

R. W. (pessoa física)

US

W. R. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

234,111 · 02/13/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/24/1986

RPI 818

Notificação para pagamento de retribuição

#13.1

04/22/1986

RPI 809

Deferimento

#9.1

12/17/1985

RPI 791

Exigência - art. 36 da LPI

#6.1

01/15/1985

RPI 743

Solicitação de exame técnico

#4.1

04/05/1983

RPI 650

Publicação do pedido de patente

#3.1

12/21/1982

RPI 635

Pedido de patente depositado

#2.1

03/30/1982

RPI 597

Anuidade - prazo legal encerrado

#18.2

10/29/1996

RPI 1352

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