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Official data from INPI

PROCESSO PARA A PREPARACAO DE UM LATEX AQUOSO

ConcedidaInvention Patent

Application data

Number

PI7902490

Type

Invention Patent

Filing

04/24/1978

Publication

-

Progress at the INPI

  1. Filing04/24/78
  2. Publication
  3. Examination02/16/82
  4. Allowance01/10/84
  5. Grant07/31/84
  6. Expired06/21/94

The letters patent expired on 06/21/1994: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 07/31/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DOW CHEMICAL CO

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Inventors

L. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/31/1984

RPI 719

Notificação para pagamento de retribuição

#13.1

05/02/1984

RPI 706

Deferimento

#9.1

01/10/1984

RPI 690

6.2

08/10/1982

RPI 616

Solicitação de exame técnico

#4.1

02/16/1982

RPI 591

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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