Official data from INPI

APERFEIÇOAMENTOS EM BIODIGESTOR

Em ExigênciaInvention Patent

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Application data

Number

PI8501500

Type

Invention Patent

Filing

03/28/1985

Publication

08/20/1985

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Progress at the INPI

Filing03/28/85
Publication08/20/85
Examination12/17/85
Allowance07/24/90
Grant07/30/91
Terminated07/25/95

The patent was granted on 07/30/1991 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: 11/14/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. F. (pessoa física)

Inventors

W. F. (pessoa física)

Technical data

IPC Classification

C02F 11/04

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

11/14/1989

RPI 995

Solicitação de exame técnico

#4.1

12/17/1985

RPI 791

Publicação antecipada

#3.2

08/20/1985

RPI 774

Pedido de patente depositado

#2.1

07/23/1985

RPI 770

Anuidade - prazo legal encerrado

#18.2

07/25/1995

RPI 1286

Concessão da patente

#16.1

07/30/1991

RPI 1078

Notificação para pagamento de retribuição

#13.1

02/19/1991

RPI 1055

Deferimento

#9.1

07/24/1990

RPI 1025

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