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Official data from INPI

DISPERSAO PARA UTILIZACAO NA OBTENCAO DE CELULOSE E PROCESSO PARA A OBTENCAO DE CELULOSE

Em AnáliseInvention Patent

Application data

Number

PI7902259

Type

Invention Patent

Filing

04/15/1978

Publication

-

Progress at the INPI

  1. Filing04/15/78
  2. Publication
  3. Examination02/09/82
  4. Allowance08/02/83
  5. Grant01/31/84
  6. Terminated06/24/86

The patent was granted on 01/31/1984 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

BAYER AG

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Inventors

B. H. (pessoa física)

K. G. (pessoa física)

S. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/24/1986

RPI 818

Cessão de direito de exploração

#22.1

06/04/1985

RPI 763

Concessão da patente

#16.1

01/31/1984

RPI 693

Notificação para pagamento de retribuição

#13.1

11/22/1983

RPI 683

Deferimento

#9.1

08/02/1983

RPI 667

Exigência - art. 36 da LPI

#6.1

02/01/1983

RPI 641

Solicitação de exame técnico

#4.1

02/09/1982

RPI 590

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