Official data from INPI

AMIDO ACRILAMIDAS E PROCESSO PARA PREPARAR AS MESMAS, PROCESSO APERFEIÇOADO PARA POLIMERIZAÇÃO DE UM DERIVADO DE AMIDO ETILENICAMENTE INSATURADO E COMPOSIÇÃO POLIMERIZADA DE AMIDO ACRILAMIDA.

ConcedidaInvention Patent

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Application data

Number

PI7702647

Type

Invention Patent

Filing

04/27/1977

Publication

View on INPI

Progress at the INPI

Filing04/27/77
Publication
Examination
Allowance08/24/82
Grant03/29/83
Terminated01/21/92

The patent was granted on 03/29/1983 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 03/29/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A.B. STALEY MANUFACTURING COMPANY (US)

Inventors

V. F. (pessoa física)

Technical data

IPC Classification

C08B 31/00 C08L 3/04

Priority claims

P680646 · 04/27/1976

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/29/1983

RPI 649

Notificação para pagamento de retribuição

#13.1

01/11/1983

RPI 638

Deferimento

#9.1

08/24/1982

RPI 618

15.0

01/12/1982

RPI 586

Exigência - art. 36 da LPI

#6.1

12/08/1981

RPI 581

Anuidade - prazo legal encerrado

#18.2

01/21/1992

RPI 1103

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