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Official data from INPI

PROCESSO PARA COMUNICAR REPELÊNCIA A ÓLEO E A ÁGUA, SOB CONDIÇÕES DE COZIMENTO DE ALIMENTOS, A MATERIAIS CELULÓSICOS

Em AnáliseInvention Patent

Application data

Number

PI8305610

Type

Invention Patent

Filing

10/11/1983

Publication

05/22/1984

Progress at the INPI

  1. Filing10/11/83
  2. Publication05/22/84
  3. Examination06/03/86
  4. Allowance06/18/91
  5. Grant11/26/91
  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: 06/03/1986. 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

C. S. (pessoa física)

US

M. L. (pessoa física)

US

R. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

433.973 · 10/13/1982

US

433.974 · 10/13/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

06/03/1986

RPI 815

Publicação do pedido de patente

#3.1

05/22/1984

RPI 709

Pedido de patente depositado

#2.1

12/27/1983

RPI 688

Carta-patente expirada

#21.1

Patente extinta em 11/10/98

07/01/2008

RPI 1956

Concessão da patente

#16.1

11/26/1991

RPI 1095

Notificação para pagamento de retribuição

#13.1

10/15/1991

RPI 1089

Deferimento

#9.1

06/18/1991

RPI 1072

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