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Official data from INPI

ELEMENTO FOTOGRÁFICO COM HALOGENETO DE PRATA EM GELATINA PARA REVELAÇÃO DE TANNING

ConcedidaInvention Patent

Application data

Number

PI8304648

Type

Invention Patent

Filing

08/26/1983

Publication

04/10/1984

Progress at the INPI

  1. Filing08/26/83
  2. Publication04/10/84
  3. Examination05/27/86
  4. Allowance01/31/89
  5. Grant08/29/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 08/29/1989. 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

A. L. (pessoa física)

IT

M. B. (pessoa física)

IT

P. R. (pessoa física)

IT

Technical data

IPC Classification

Priority claims

IT

65209 A/82 · 08/27/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

06/06/1989

RPI 972

Deferimento

#9.1

01/31/1989

RPI 954

Exigência - art. 36 da LPI

#6.1

06/28/1988

RPI 923

6.2

10/06/1987

RPI 885

Solicitação de exame técnico

#4.1

05/27/1986

RPI 814

Publicação do pedido de patente

#3.1

04/10/1984

RPI 703

Pedido de patente depositado

#2.1

11/01/1983

RPI 680

Carta-patente expirada

#21.1

Patente extinta em 26/08/98

07/01/2008

RPI 1956

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