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Official data from INPI

DISCO DE REGISTRO DE SUPERFÍCIE ESTICADA

Em ExigênciaInvention Patent

Application data

Number

PI8500633

Type

Invention Patent

Filing

02/12/1985

Publication

10/01/1985

Progress at the INPI

  1. Filing02/12/85
  2. Publication10/01/85
  3. Examination09/01/87
  4. Allowance03/31/92
  5. Grant11/24/92
  6. Terminated05/21/96

The patent was granted on 11/24/1992 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: 05/30/1989. 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

L. E. (pessoa física)

US

V. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

580.892 · 02/16/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

6.2

05/30/1989

RPI 971

Solicitação de exame técnico

#4.1

09/01/1987

RPI 880

Publicação do pedido de patente

#3.1

10/01/1985

RPI 780

Pedido de patente depositado

#2.1

04/30/1985

RPI 758

Anuidade - prazo legal encerrado

#18.2

05/21/1996

RPI 1329

Concessão da patente

#16.1

11/24/1992

RPI 1147

Notificação para pagamento de retribuição

#13.1

09/08/1992

RPI 1136

Republicação - classificação IPC

#15.11

07/28/1992

RPI 1130

Deferimento

#9.1

03/31/1992

RPI 1113

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