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Official data from INPI

ELEMENTO FOTOSSENSÍVEL; E PROCESSO PARA A SUA PREPARAÇÃO

Em ExigênciaInvention Patent

Application data

Number

PI8606371

Type

Invention Patent

Filing

12/22/1986

Publication

10/13/1987

Progress at the INPI

  1. Filing12/22/86
  2. Publication10/13/87
  3. Examination10/04/88
  4. Allowance08/21/90
  5. Grant04/30/91
  6. Terminated10/03/95

The patent was granted on 04/30/1991 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: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT [US]

See this company's full portfolio

Inventors

J. T. (pessoa física)

US

J. B. (pessoa física)

US

N. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

813.969 · 12/27/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

11/07/1989

RPI 994

Solicitação de exame técnico

#4.1

10/04/1988

RPI 937

Publicação do pedido de patente

#3.1

10/13/1987

RPI 886

Pedido de patente depositado

#2.1

04/28/1987

RPI 862

Anuidade - prazo legal encerrado

#18.2

10/03/1995

RPI 1296

Concessão da patente

#16.1

04/30/1991

RPI 1065

Notificação para pagamento de retribuição

#13.1

12/04/1990

RPI 1044

Deferimento

#9.1

08/21/1990

RPI 1029

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