Hier doch noch mein Minimalbeispiel mit dem Stand, den ich bisher mit authoryear erreichen konnte:
Das LaTeX-Dokument mit allen Anpassungen des Literaturverzeichnisses:
%Minimalbeispiel: Latex-Teil
\documentclass[
12pt, a4paper, oneside, notitlepage, pointlessnumbers, nochapterprefix, smallheadings, noappendixprefix, toc=graduated]{scrreprt}
%Pakete
\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\usepackage[babel,german=quotes]{csquotes}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\fontsize {12pt}{18pt}
\linespread {1.5}
\setlength{\parindent}{0pt}
%Bibliographie
\usepackage [style=authoryear] {biblatex} 
\ExecuteBibliographyOptions{
	firstinits=true, 
	isbn=false, 
	url=false, 
	doi=false, 
	sorting=nyt, 
	minnames=1, 
	maxcitenames=2, 
	maxbibnames=10, 
	language=ngerman, 
	alldates=comp, 
	punctfont=true,
	dashed=false} 
\AtBeginBibliography{
  \renewcommand*{\multinamedelim}{\textbf\addsemicolon\space}
  \renewcommand*{\finalnamedelim}{\textbf\addsemicolon\space}}
\renewcommand*{\nameyeardelim}{\textbf\addcomma\space}
\DefineBibliographyStrings{ngerman}{ 
  sequens = {f},  sequentes = {ff}} %für S. xy f.
\DefineBibliographyStrings{ngerman}{
	editors = {\mkbibbold{Hrsg.}}, editor = {\mkbibbold{Hrsg.}}, % Hrsg. an Autorenstelle in Fettdruck
	andothers = {et\addspace al\adddotspace}, andmore = {et\addspace al\adddotspace}} %et al. anstatt u.a.
\renewcommand*{\sqspace}{}
\DeclareNameAlias{sortname}{last-first}
\renewcommand*{\labelnamepunct}{\textbf\addcolon\space}
\renewcommand*{\newunitpunct}{\addcomma\space}
\renewbibmacro*{publisher+location+date}{
  \printlist{publisher} 
  \setunit*{\addcolon\space}
  \printlist{location}
  \setunit*{\addcomma\space}
  \usebibmacro{date}
  \newunit}
\AtBeginBibliography{
\renewcommand*{\mkbibnamelast}[1]{%Fettdruck für Nach- und Vornamen
  \ifmknamesc{\mkbibbold{#1}}{#1}}
\renewcommand*{\mkbibnamefirst}[1]{%
  \ifmknamesc{\mkbibbold{#1}}{#1}}
\renewcommand*{\mkbibnameprefix}[1]{%
  \ifboolexpr{ test {\ifmknamesc} and test {\ifuseprefix} }
    {\mkbibbold{#1}}
    {#1}}
\def\ifmknamesc{ %Unterscheidung zwischen Hrsg. und Label beim Fettdruck
  \ifboolexpr{ test {\ifcurrentname{labelname}}
               or test {\ifcurrentname{author}}
               or ( test {\ifnameundef{author}} and test {\ifcurrentname{editor}} ) }}
}
\setlength {\bibitemsep}{18pt} %Zwischenraum zwischen Einträgen
\setlength {\bibhang}{0.2cm}
\DeclareFieldFormat [article,book,inbook,incollection,inproceedings,patent,thesis,unpublished] {title}{\mkbibquote{#1\isdot}} %Titel in Anführungszeichen
\DeclareFieldFormat [article,book,inbook,incollection,inproceedings,patent,thesis,unpublished] {date}{\mkbibbold{#1}} %Jahr in Fettdruck
\DeclareFieldFormat{parens}{\mkbibbold{\mkbibparens{#1}}} %Klammern um Jahr im Fettdruck
\bibliography{Minilib} 
\begin{document}
Beipieltext: hier steht dann ganz viel Inhalt später....\\
\newpage
\nocite {*} 
\printbibliography 
\end {document} 
Bib-Daten, um möglichst viele Varianten zu sehen:
%Minilib-Bib
@article{Leroy1978b,
author = {Leroy, Rodney L.},
journal = {Corrosion-NACE},
number = {4},
pages = {113--119},
title = {{Polythioglycolate Passivation of Zinc}},
volume = {34},
year = {1978}
}
@article{Leroy1978a,
author = {Leroy, Rodney L.},
journal = {Corrosion-NACE},
number = {3},
pages = {98--109},
title = {{Chelate Inhibitors for Zinc and Galvanized Products}},
volume = {34},
year = {1978}
}
@article{Georges2008,
author = {Georges, C and Rocca, Emmanuel and Steinmetz, P},
doi = {10.1016/j.electacta.2008.01.073},
issn = {00134686},
journal = {Electrochimica Acta},
number = {14},
pages = {4839--4845},
title = {{Synergistic effect of tolutriazol and sodium carboxylates on zinc corrosion in atmospheric conditions}},
url = {http://linkinghub.elsevier.com/retrieve/pii/S0013468608001618 http://144.206.159.178/FT/308/537986/12088030.pdf},
volume = {53},
year = {2008}
}
@book{Brepohl1998Theorie,
address = {M\"{u}nchen, Wien},
author = {Brepohl, E.},
edition = {13. erweit},
publisher = {Fachbuchverlag Leipzig im Carl Hanser Verlag},
title = {{Theorie und Praxis des Goldschmieds}},
year = {1998}
}
@book{Wohlleben2003,
address = {Z\"{u}rich},
author = {Wohlleben, Marion and Meier, H.R.},
editor = {{Institut f\"{u}r Denkmalpflege der ETH Z\"{u}rich}},
isbn = {3728128651},
publisher = {vdf Hochschulverlag AG},
title = {{Nachhaltigkeit und Denkmalpflege: Beitr\"{a}ge zu einer Kultur der Umsicht}},
volume = {24},
year = {2003}
}
@book{ICOMOS1992Rev,
address = {M\"{u}nchen},
booktitle = {Tagung des deutschen Nationalkomitees von ICOMOS und des Sonderforschungsbereiches 315 der Universit\"{a}t Karlsruhe (24.-26. Oktober 1991)},
editor = {ICOMOS and {Nationalkomitee der Bundesrepublik Deutschland}},
publisher = {Karl M. Lipp Verlag},
series = {Hefte des Deutschen Nationalkomitees},
title = {{Reversibilit\"{a}t: das Feigenblatt in der Denkmalpflege?}},
url = {http://www.bcin.ca/Interface/openbcin.cgi?submit=submit\&Chinkey=191843},
year = {1991}
}
@phdthesis{Schmidt-Ott1993Silber,
author = {Schmidt-Ott, K.},
school = {Staatliche Akademie der Bildenden K\"{u}nste Stuttgart},
title = {{Reinigung von Silberoberfl\"{a}chen}},
type = {Diplomarbeit},
year = {1993}
}
@misc{Derule1997,
author = {Derule, Herve and Steinmetz, Jean},
institution = {Deutsches Patent- und Markenamt},
publisher = {Haft, von Puttkamer, Berngruber, Czybulka, 81669 M\"{u}nchen},
title = {{Verfahren zur Oberfl\"{a}chenbehandlung von mit Zink oder Zinklegierung teilplattiertem Stahlblech}},
year = {1997}
}
@incollection{Rocca2007a,
author = {Rocca, Emmanuel and Mirambet, Fran\c{c}ois},
booktitle = {Corrosion of Metallic Heritage Artefacts: Investigation, Conservation and Prediction of Long Term Behaviour},
chapter = {18},
editor = {Dillmann, Philippe and Piccardo, Pedro and Beranger, Gerard},
isbn = {978-1845692391},
pages = {308--334},
title = {{Corrosion inhibitors for metallic artefacts: temporary protection}},
url = {http://scholar.google.com/scholar?hl=en\&btnG=Search\&q=intitle:Corrosion+inhibitors+for+metallic+artefacts:+temporary+protection\#3},
year = {2007}
}